A current sampling circuit for a bridgeless power factor corrector is provided. The current sampling circuit comprises a sampling resistor, a first and second current sampling modules. In the first and second current sampling modules, primary windings of transformers are respectively serially connected to a first and second fast switches of the bridgeless power factor corrector. In a positive half cycle of the AC power, a second sampled current phase switching unit is turned on to form a second sampling circuit, and a first main current freewheeling unit is turned on to form a freewheeling path of a first transformer. In a negative half cycle of the AC power, a first sampled current phase switching unit is turned on to form a first sampling circuit, and a second main current freewheeling unit is turned on to form a freewheeling path of a second transformer.
A power supply having ORing MOSFETs mounts a voltage regulating unit between a main power module and an auxiliary power module of a secondary side of the power supply. The voltage regulating unit regulates a control voltage received by a driving unit, such that a voltage difference between a gate voltage and a source voltage of one of the ORing MOSFETs can be less than a rated voltage threshold for avoiding damaging the one ORing MOSFET.
H02M 1/088 - Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters for the simultaneous control of series or parallel connected semiconductor devices
H02M 3/335 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
09 - Scientific and electric apparatus and instruments
37 - Construction and mining; installation and repair services
42 - Scientific, technological and industrial services, research and design
Goods & Services
Batteries; Transformers; Battery chargers; Battery chargers for use with vehicle batteries, mobile phones; laptops; computers; Charging stations for electric vehicles; Computer keyboard controllers; Converters, electric; Downloadable computer software for monitoring power supply, electricity management solution, battery level monitoring and power management solution; Downloadable software in the nature of a mobile application for monitoring power supply, electricity management solution, battery level monitoring, power management solution; Electric car charging piles; Electric power converters; Portable power chargers; Power cables; Power controllers; Solar cells; Solar panels for production of electricity; Voltage regulators; Accumulators Installation, maintenance and repair of computer hardware; Installation, maintenance and repair of solar installations for generating power; Cable laying; Charging of electric vehicles; Charging station services for electric vehicles; Custom installation of exterior, interior and mechanical parts of vehicles; Electrical contractor services; Information technology consultancy relating to installation, maintenance and repair of computer hardware; Machinery installation, maintenance and repair; Rental of battery chargers for electric motor scooters; Vehicle battery charging; Vehicle service stations Architectural design in the field of energy use facilities; Computer services, namely, integration of private and public cloud computing environments; Consultation services relating to computer software; Consulting services in the field of architectural design; Engineering services in the field of electrical power and natural gas production; Engineering services, namely, engineering for the technical project planning; Providing scientific information, advice and consultancy relating to carbon offsetting; Providing scientific information, advice and consultancy relating to net zero emissions; Research and development services in the field of engineering; Software as a service (SAAS) services featuring software for monitoring power supply, electricity management solution, battery level monitoring, power management solution; Software as a service (SAAS) services featuring software using artificial intelligence (AI) for monitoring power suppl, electricity management solution, battery level monitoring, power management solution; Technical consulting in the field of environmental engineering; Technological consultation in the technology field of Environmental engineering technical product design; Technological research in the field of monitoring power supply, electricity management solution, battery level monitoring, power management solution, renewable energy resources; Technological planning and consulting services in the field of light engineering; Technology consultation in the field of conservation of energy; Technology consultation in the field of computer data processing; Consulting in the field of engineering; Design and development of computer hardware; Research and development of new products for others; Research in the field of artificial intelligence technology
09 - Scientific and electric apparatus and instruments
37 - Construction and mining; installation and repair services
42 - Scientific, technological and industrial services, research and design
Goods & Services
(1) Accumulators being electrical storage batteries; automotive batteries; batteries for cell phones; battery chargers for laptop computers; charging stations for electric vehicles; charging stations for hybrid cars; computer hardware and software and sensors for controlling and regulating engine, clutch and transmission functions in order to optimize fuel consumption in land vehicles; computer hardware and software for controlling and regulating activation and deactivation of a freewheel function in order to reduce fuel consumption in land vehicles; computer software application for electric vehicle chargers; computer-controlled steering system for recreational vehicles featuring smart technology; downloadable mobile application software for monitoring and tracking voltage, capacity, performance and cell status of lithium-ion batteries; electric accumulators for vehicles; electric converters; electric power converters; electric transformers; electricity meters; mobile applications, namely, downloadable mobile application for facilitating charging of electric vehicles, locating electric vehicle charging stations, remote observation, management and operation of electric vehicle charging stations, and authentication and payment of electric vehicle charging stations; mobile phone chargers; portable battery chargers for use with electric vehicles; power banks; power cables; power modules for sequential control; smart chargers for electric vehicles; solar cells; solar panels; uninterruptible power supply apparatus (1) Cable laying; charging of electric vehicles; custom installation of automobile interiors; information technology consultancy relating to installation, maintenance and repair of computer hardware; installation of solar power systems; installation, maintenance and repair of automatic doors and barriers; installation, maintenance and repair of computer hardware; installation, maintenance and repair of computer hardware for electrical charging stations; installation, maintenance and repair of electric battery systems for controlling the storage and discharge of stored electricity for use in connection with vehicles; installation, maintenance and repair of electric vehicle charging stations; installation, maintenance and repair of electrical network monitoring systems; refuelling and maintenance vehicle service stations; rental of portable battery chargers for electric vehicles; vehicle battery charging; vehicle service stations for charging electric vehicles
(2) Advisory and consultancy services in the field of alternative energy generation; architectural design services; computer software consulting; computer software design; consultancy in the field of energy-saving; consultancy relating to technological services in the field of power and energy supply; consulting in the field of electrical engineering; consulting services in the field of cloud computing; consulting services in the field of renewable energy projects; consulting services in the fields of energy consumption and usage conservation to improve energy efficiency; design and development of computer hardware; providing engineering consulting services for the development of energy capture systems; providing scientific information, advice and consultancy relating to carbon offsetting; providing scientific information, advice and consultancy relating to net zero emissions; research and development of new products for others; research in the field of artificial intelligence technology; software as a service (SAAS) services featuring software for tracking and managing energy and fuel consumption by buildings, industrial equipment, machinery; software as a service (SaaS) services offering software utilizing artificial intelligence to assist in construction project management; technical consulting in the field of environmental engineering; technical research in the field of carbon offsetting
09 - Scientific and electric apparatus and instruments
37 - Construction and mining; installation and repair services
42 - Scientific, technological and industrial services, research and design
Goods & Services
Electric power supply units; Smart meters; Batteries for electric vehicles; Solar panels; Solar cells; Computer software; Mobile apps; Power cables; Chargers; Transformers; Electric car charging piles; Charging stations for electric vehicles; Power banks; Converters, electric; Electric power converters; batteries; Accumulators; Computer controllers; Controllers and regulators; Power modules; Battery chargers; Uninterruptable power supply apparatus. Repair of energy production plants and machines; Maintenance and repair of solar power installations; Installation, maintenance and repair of computer hardware; Information technology consultancy relating to installation, maintenance and repair of computer hardware; Cable laying; services of electricians; Custom installation of exterior, interior and mechanical parts of vehicles [tuning]; Machinery installation, maintenance and repair; Vehicle service stations [refuelling and maintenance]; Vehicle battery charging; Charging of electric vehicles; Reservation of charging stations for electric vehicles; Rental of battery chargers for electric motor scooters. Computer software design; Design and development of computer hardware; Engineering consultancy; Research and development of new products for others; Research in the field of artificial intelligence technology; Professional consultancy relating to the conservation of energy; Engineering services in the field of electrical power and natural gas production; Architectural design of energy use facilities; Providing scientific information, advice and consultancy relating to carbon offsetting; Providing scientific information, advice and consultancy relating to net zero emissions; Environmental engineering technical consulting product design; Automatic control system engineering planning and design; Technical planning and consulting in the field of light engineering; Research and development services; Technical research; Technical research projects and studies; Software as a service [SaaS] featuring computer software platforms for artificial intelligence; Technical consultation related with computer data processing; Cloud computing services; Software as a service [SaaS]; Architectural design services; Technical consulting in the field of environmental engineering; Technical project planning in the field of engineering; Computer software consulting services.
A power plug with thermal insulation-function has an output connector having a wire connecting end, an internal module, a housing, and an external module. The internal module has an outer surface and encloses the wire connecting end of the output connector. A plurality of recesses are concavely formed on the outer surface of the internal module. The housing encloses the outer surface of the internal module, wherein a plurality of gas cells are formed between the housing and each of the plurality of recesses. The external module encloses the housing and the internal module. Air can be stored in the gas cells for insulating thermal conduction from inside to outside. Heat can hardly transfer from the internal module to the external module to dissipate via the outer surface of the external module, thereby lowering the surface temperature of the external module to avoid burning the user.
A power supply has a housing, a circuit board, a wire, and a wire securing assembly. The wire securing assembly has a base plate and a securing structure. The securing structure has a first plate and a second plate. A side edge of the first plate is connected to the base plate. The second plate is spaced apart from the first plate. The wire is mounted through and between the first plate and the second plate. The wire securing assembly is modified from the current insulating part, in which the original side plate extends and forms an additional part, or a bent structure is added on the original side plate, and thus the additional structures become the securing structure. Thus, the wire is prevented from moving under vibration or external force and contacting the blades of the fan, or keeps in a position in compliance with safety requirements.
A heat dissipating structure of a power supply is disposed on an inner side of a casing and has two heat dissipating covers configured to be connected with each other, and a heat dissipating sleeve annularly mounted on and around the two heat dissipating covers and disposed between the heat dissipating covers and the casing. The heat dissipating sleeve is able to be bent according to an internal structure of the casing for attaching to the casing and increasing contact area between the heat dissipating sleeve and the casing. The heat from an interior of the power supply can be conducted to the two heat dissipating covers for a first heat spreading and then to the heat dissipating sleeve for a second heat spreading. Thus, speed of heat dissipation to an exterior of the casing can be increased and temperature inside the power supply can be effectively reduced.
NATIONAL TSING HUA UNIVERSITY (Taiwan, Province of China)
Inventor
Chieng, Wei-Hua
Chang, Yi
Yao, Da-Jeng
Tang, Li-Chuan
Wu, Chih-Chiang
Shieh, Yueh-Tsung
Liu, Ching-Yao
Abstract
A D-mode GaN transistor synchronous rectifier of the present invention includes a power switching module, a peak detection module, and a gate driver module. The peak detection module stores energy when the negative end of the secondary side winding of the power converter is at a high voltage. The power switching module includes a first switch and a D-mode GaN HEMT as a second switch connected in series. The energy is provided to the module gate of the power switching module through the gate driver module to keep the first switch turned on. The gate driver module conducts the module gate and the module source when the positive end of the secondary side winding is at a low voltage, such that a clamp circuit pulls the gate-source voltage of the second switch below threshold and turns it off. The synchronous rectifier replaces conventional diode rectifier, having lower conduction loss and response ringing.
H02M 3/335 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
H02M 1/08 - Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
10.
GROUND POINT FIXING DEVICE FOR POWER SUPPLY MODULE
A ground point fixing device for a power supply module includes an engaging part and a fastening part. The engaging part includes an engaging body, a joining portion and an engaging portion. The engagement body has a body outer diameter and a body surface larger than a grounding hole on a power supply module circuit board. The joining portion is disposed on the body surface and has a joining portion outer diameter smaller than the grounding hole. The engagement portion is disposed on the body surface and around an outer circumference of the joining portion. The joining portion is passed through the grounding hole to be connected to the fastening part, so that the engagement portion of the engaging part is engaged in the grounding hole, and the fastening part and the engagement body of the engaging part are respectively fixed on an upper surface and a lower surface of the circuit board.
A power-saving charging device controls both a primary side controller and a secondary side controller to be in a shutdown state when an output terminal is not connected to the load. When the output terminal is connected to the load, the secondary side controller receives a power-on power supply from a power storage unit, performs a power-on procedure and enters a working state. The primary side controller receives a power-on signal from the power storage unit, performs the power-on procedure according to the power-on signal, and enters the working state. Accordingly, when the charging device is not connected to the load, it can enter a standby state with extremely low power consumption in which the primary side controller and the secondary side controller are both turned off, thereby achieving the effect of saving the power consumption of the controller when the charging device is in standby.
A power converter with an adjustable output voltage has an isolation DC/DC transformer, a primary side circuit connected to a primary coil of the isolation DC/DC transformer for transmitting an input AC power to the primary coil, and a secondary side circuit connected to a secondary coil of the isolation DC/DC transformer. The secondary side circuit includes a first output loop, a second output loop and a mode switch connected in the first output loop. When power consumption of a load is low, the mode switch is turned off to interrupt the first output loop so that the secondary side circuit generates a first output voltage with a low voltage level. When power consumption of a load is high, the mode switch is turned on and the secondary side circuit generates a second output voltage with a high voltage level. Without greatly increasing circuits, the power converter achieves wide-range voltage regulation.
H02M 3/335 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
13.
Power supply device with multiple outputs and power allocation control method thereof
The power supply device with multiple outputs includes two output ports, a power converting module with two power output ends, and two switching modules connected among the two power output ends and the two output ports. The output power from the two power output ends can be independently allocated to either one or two of the two second output ports. When one of the output ports requests for a demand power, the power supply device is able to determine which one or both of the power output ends to output power to the output port, reaching a better power allocation efficiency.
A power supply having a bidirectional gate driving impulse transformer. The power supply includes a transformer, a first Buck converter, the bidirectional gate driving impulse transformer, a primary side controller, a secondary side controller, a first optocoupler, and a second optocoupler; the transformer voltage-transforms a power input from a power inlet and generates an output voltage; the first Buck converter bucks the power input from the power inlet and generates a power voltage; the bidirectional gate driving impulse transformer is powered by either the output voltage or the power voltage; the primary side controller is powered by the power voltage, and the secondary side controller is powered by the output voltage; wherein the bidirectional gate driving impulse transformer drives the transformer according to either a primary side control signal from the primary side controller or a secondary side control signal from the secondary side controller.
H02M 1/42 - Circuits or arrangements for compensating for or adjusting power factor in converters or inverters
H02M 3/335 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
15.
Power supply device with improved current balancing mechanism
A power supply device with improved current balancing mechanism includes a power supply module, and a current detecting module detecting the output current to generate a sample voltage. A compensation voltage is provided that is in superposition with the sample voltage to synthesizes a corrected sample voltage, and a current mirror unit receives the corrected sample voltage at a first end. A positive input end of a comparator unit is connected to a second end of the current mirror unit, and is connected to the first end through a voltage divider, while the comparator unit outputs the current share voltage under negative feedback control. The current share output is corrected by compensating the sampling voltage and reflecting it by a current mirror with a certain ratio, the inconvenience of manually adjusting variable resistor, or the problem of temperature influenced BJT and MOSFET, or phase delay of digital sampling is solved.
H02M 3/158 - Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load
16.
Power supply device with multiple wide-volt age range outputs and control method thereof
A power supply device has a first output port, a second output port and a power delivery control module. The power delivery control module compares the first output voltage value and the second output voltage value to determine a reference voltage value, and determines the optimized voltage value according to the total output power value, the reference voltage value, and a rated output current of an AC/DC converting module. The power delivery control module controls the AC/DC converting module to convert the AC input voltage to an optimized voltage, so that when the first and second DC/DC converting modules receive the optimized voltage and convert it to the first and second output voltages respectively, the voltage drop is reduced, the conversion loss is reduced, and the conversion efficiency of the power supply device is improved.
An integrated driving module includes an oscillator, a PWM unit, a soft start controller, a first driver, and a second driver. The oscillator is connected to a voltage input end and generates an oscillating signal. The PWM unit receives the oscillating signal and generates a first driving control signal and a second driving control signal that are respectively anti-phased. The first driver outputs a first driving output signal to a first output end according to the first driving control signal. The second driver outputs the second driving output signal to a second output end according to the second driving control signal. The integrated driving module only has four connection ends for external connection to provide the two anti-phase driving output signals, such that the circuit design and connection of the primary side of the transformer is greatly simplified. The design limitation and manufacturing cost can be both lowered.
H03K 17/16 - Modifications for eliminating interference voltages or currents
H03K 17/691 - Electronic switching or gating, i.e. not by contact-making and -breaking characterised by the use of specified components by the use, as active elements, of semiconductor devices the devices being field-effect transistors with galvanic isolation between the control circuit and the output circuit using transformer coupling
H02M 1/42 - Circuits or arrangements for compensating for or adjusting power factor in converters or inverters
The redundant power supply device includes a power output port, a converter, a comparator unit and an output protection switch. The output protection switch is electrically connected between an output terminal of the converter and the power output port, and the comparator unit compares the voltage across the output protection switch and controls the output protection switch accordingly. The redundant power supply device has a control module that performs a protection control method. When the voltage of the power output port is higher than a preset voltage value and the output current is lower than a preset current value, the control module outputs a short turn-off signal to the enable terminal of the comparator unit, preventing the comparator unit from failing to perform the output protection as designed due to external abnormal slow rising voltage, and ensuring the redundant power supply unit operates normally.
H02J 9/06 - Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over
19.
Power supply device with an electronic circuit breaker and method for controlling the same
A power supply device includes a power output terminal, a power converter and an electronic circuit breaker. In view of operation of the electronic circuit breaker, when an electric appliance that acts as a load is connected between the power output terminal and a ground terminal, the electronic circuit breaker is activated to output voltage from the power converter to the power output terminal so as to charge the electric appliance. When the electric appliance is done with charging and is removed, the electronic circuit breaker is deactivated to prevent voltage of the power converter from being outputted to the power output terminal. Thus, even if the power output terminal is exposed, the power output terminal won't output power to result in electric shock because of users' inadvertent contact when no electric appliance is being charged, thereby enhancing operational safety.
G06F 1/28 - Supervision thereof, e.g. detecting power-supply failure by out of limits supervision
H02J 9/06 - Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over
H02J 50/10 - Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
H03K 17/00 - Electronic switching or gating, i.e. not by contact-making and -breaking
G06F 1/3203 - Power management, i.e. event-based initiation of a power-saving mode
G06F 1/3206 - Monitoring of events, devices or parameters that trigger a change in power modality
A power supply with a staggered configuration includes a housing having an accommodation space, a first power supply module, a second power supply module, and an electric fan which are disposed inside the accommodation space. The first power supply module includes a first frontend power conversion unit and a first backend power conversion unit which are disposed at separate airflow passages. When the power supply is in operation, the electric fan turns and drives the air to flow into the housing in such a way that one airflow passage is through the first frontend power conversion unit and another airflow passage is through the first backend power conversion unit. In this way, the heat dissipation efficiency is increased with two separated air flow passages respectively flowing through and cooling down the first frontend power conversion unit and the first backend power conversion unit.
A redundant power supply system has power supplies and holdup control circuits. The power supplies are connected in parallel for connecting to an input capacitor of a load system. An OR-gate anti-reverse current element is connected between each of the power supplies and the input capacitor. The holdup control circuits correspondingly connect to the DC output sides of the power supplies. Each of the holdup control circuits has an inductor, an electronic switch and a controller. The inductor is connected in series to the OR-gate anti-reverse current element. The electronic switch is connected between the DC output side of the corresponding power supply and a node where the inductor and the OR-gate anti-reverse current element are connected. The controller turns on and off of the electronic switch according to the DC power output from the DC output sides, thereby prolonging the holdup time after a power failure.
H02J 9/06 - Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over
The present application is a converter having a low loss snubber. The low loss snubber of the converter includes a clamping winding, a first capacitor, and a second capacitor. The clamping winding is magnetically coupled with a primary winding of a transformer of the converter. The primary winding to a secondary winding of the transformer leakage inductance energy is recovered by storing the energy in the second capacitor. When the second capacitor is discharging, the energy in the second capacitor may be further transferred to the first capacitor. When the first capacitor is discharging, energy in the first capacitor may be further returned to the power source. Therefore, the energy in the first capacitor and the energy in the second capacitor may not be consumed by a resistor, and power consumption of the low loss snubber may be decreased.
H02M 3/335 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
H02M 1/44 - Circuits or arrangements for compensating for electromagnetic interference in converters or inverters
23.
Totem-pole power factor corrector and current-sampling unit thereof
A totem-pole PFC and a current-sampling unit of the totem-pole PFC are provided. The totem-pole PFC is electrically connected to an AC power source and a DC-to-DC converter, and is electrically connected to a load through the DC-to-DC converter. The current-sampling unit has a first sampling switch and a second sampling switch. The first sampling switch and the second sampling switch are controlled to be turned on and turned off so that a magnetizing current flows through the magnetizing inductor when a magnetizing inductor is magnetized and a demagnetizing current does not flow through the sampling resistor when the magnetizing inductor is demagnetized, thereby increasing the demagnetization efficiency and overcoming superimposed operations to improve current detection and increase conversion efficiency of the power conversion.
G05F 1/33 - Regulating voltage or current wherein the variable is actually regulated by the final control device is AC using magnetic devices having a controllable degree of saturation as final control devices with plural windings through which current to be controlled is conducted
G05F 5/00 - Systems for regulating electric variables by detecting deviations in the electric input to the system and thereby controlling a device within the system to obtain a regulated output
H02M 1/42 - Circuits or arrangements for compensating for or adjusting power factor in converters or inverters
H02M 7/06 - Conversion of AC power input into DC power output without possibility of reversal by static converters using discharge tubes without control electrode or semiconductor devices without control electrode
H02M 3/335 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
H02M 1/08 - Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
A control method for an active clamp converter has steps of: detecting a state of the load; when the state of the load is a light-load state, using a skipping mode to control a switch frequency of a master switch; when the state of the load is not the light-load state, using an ACF mode to control the switch frequency of the master switch. In the skipping mode, the switch frequency is decreased when the state of the load is getting light, thus providing an energy efficiency power saving function for the light-load state. In the ACF mode, the master switch is controlled to turn on while a reverse current is generated, thus the switching loss of the master switch is reduced.
H02M 3/33 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using discharge tubes only
H02M 3/335 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
A filtered connector is mounted on a casing and includes a connection port and a filter board. An electrode plate mounted on one end of the connection port and electrically isolated from the casing is securely mounted through a through hole of the casing. The filter board has a circuit board assembly, multiple grounding spring plates and multiple filtering capacitors. The circuit board assembly has a slot to be mounted through by the electrode plate. The grounding spring plates are mounted on a surface of the circuit board assembly and electrically contact the casing. The filtering capacitors are electrically connected between the electrode plate and the grounding spring plates. As the filter board is not mounted inside the connection port, only the filter board is to be mounted without replacing the connection port, thereby lowering users' expense in installation of the filter board.
H01R 13/74 - Means for mounting coupling parts to apparatus or structures, e.g. to a wall for mounting coupling parts in openings of a panel
H01R 13/66 - Structural association with built-in electrical component
H01R 13/6594 - Specific features or arrangements of connection of shield to conductive members the shield being mounted on a PCB and connected to conductive members
A feed forward controlling circuit is used to perform a feed forward controlling method to restrain ripple of the output voltage in a power converter. The power converter is controlled by a control signal outputted from an output terminal of a controller. The method includes steps of: receiving an output voltage from an output terminal of a voltage converter; attenuating the output voltage to generate an electrical signal; acquiring a DC signal from the electrical signal; and obtaining a ripple compensation signal in accordance with the electrical signal and the DC signal to output to an output terminal of a controller. The output terminal of the controller outputs a control signal to control the power converter.
H02M 3/335 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
H02M 1/42 - Circuits or arrangements for compensating for or adjusting power factor in converters or inverters
H02M 1/15 - Arrangements for reducing ripples from DC input or output using active elements
A redundant power supply apparatus includes at least two power inlets, at least two power supply units, and a common component. Each power inlet is connected to an AC power source. Each power supply unit has an input side and the at least two power supply units having a common output side, each input side is connected to the power inlet, and each power supply unit is configured to convert the AC power source into a DC power source. The common component is connected at the common output side and configured to receive DC power sources. Accordingly, the redundant power supply apparatus is provided to improve reliability of redundant operations between multiple external power sources without using mechanical switches.
H02M 3/33 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using discharge tubes only
H02M 3/335 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
H02M 7/493 - Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode the static converters being arranged for operation in parallel
H02J 9/06 - Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over
An irregularity detection device for a power switch determines if a temperature-dependent resistance on a current path of the power switch is abnormal according to if a voltage on the current path is greater than or equal to a configuration value when the power switch is turned on, and generates an irregularity alarm associated with the power switch based on the determination result.
G06F 1/28 - Supervision thereof, e.g. detecting power-supply failure by out of limits supervision
H02H 3/20 - Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition, with or without subsequent reconnection responsive to excess voltage
H02H 7/12 - Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for convertersEmergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for rectifiers for static converters or rectifiers
G06F 1/26 - Power supply means, e.g. regulation thereof
H03K 17/14 - Modifications for compensating variations of physical values, e.g. of temperature
H02M 1/42 - Circuits or arrangements for compensating for or adjusting power factor in converters or inverters
H02M 3/335 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
A power supply has a power factor correction (PFC) circuit and a DC to DC conversion circuit. A DC to DC controller of the DC to DC conversion circuit acquires zero-crossing information and load information from the PFC circuit through a communication protocol, and performs a low-frequency compensation on a control command using a table-mapping means, thereby resolving the issues of higher controller complexity, changes of entire response characteristics and cost increase in conventional compensation technique.
H02M 1/42 - Circuits or arrangements for compensating for or adjusting power factor in converters or inverters
H02M 3/157 - Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators with digital control
H02M 3/335 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
H02M 1/14 - Arrangements for reducing ripples from DC input or output
A DC converter includes a non-isolated conversion module and an isolated conversion module. The non-isolated conversion module is implemented based on a redundant structure and has a first power conversion loop, a second power conversion loop, and an energy storage element. The first and second power conversion loops are connected and share the energy storage element. The energy storage element is further connected to an input terminal of the isolated conversion module. The first and second conversion loops of the non-isolated conversion module convert DC power outputted from two battery sets and output the converted power to the isolated conversion module. The isolated conversion module further supplies DC power to a load. Accordingly, power supply systems using the foregoing DC converter can reduce the number of transformer therein and thus size reduction of the power supply system can be achieved.
H02J 9/06 - Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over
H02M 7/217 - Conversion of AC power input into DC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
H02M 3/158 - Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load
A multi-mode current-allocating device serves to control the DC to DC converter in each power supply device of a distributive power supply system. The multi-mode current-allocating device has an active current-sharing control circuit, a current-allocating bypass circuit, and a droop current sharing control circuit to be selectively operated under an active current-sharing mode, a current-allocating mode or a droop current-sharing mode according to the factors of the type of input power of each power supply device, the state of system load, and the system reliability so as to maintain the power supply efficiency of entire power supply system and reduce unnecessary power loss.
H02M 3/156 - Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
An AC backup power system controls a power supply to selectively connect to a primary AC power source or a backup AC power source through a switching module. The switching module is controlled by a monitoring module. The monitoring module has a power monitoring unit, a first circuit switch, a second circuit switch, and a first processor. When the power monitoring unit detects an interruption of primary AC current, the first circuit switch that is normally closed is immediately turned off. The first processor then drives the switching module to connect to the backup AC power source. Once the backup AC power source reaches the zero-crossing point, the second circuit switch is turned on so that the backup AC power source provides power to the power supply. The power supply receives power at the zero-crossing point to avoid problems of sparks and coke deposition.
H02J 9/00 - Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
H02J 9/06 - Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over
A universal power supply system allows each board mounted DC power module or each AC/DC power supply device therein having identical dimensions and appearance to further have a specification setting circuit. When the board mounted DC power module or the AC/DC power supply device is plugged in a backboard module, the specification setting terminal outputs a specification identification signal to a monitoring circuit of the backboard module. As built in with a specification mapping table, the monitoring circuit can compare the specification identification signal to find a model number corresponding to the signal, and automatically sets a critical current value or critical power value of each board mounted DC power module for over-current protection or over-power protection. Accordingly, the universal power supply system can be adapted to different board mounted DC power modules or AC/DC power supply devices without redesigning the backboard module.
The present invention relates to a power supply with output protection and a control method of the power supply. The invention mainly provides a pre-protection value lower than a default over-current protection value. When a present output current of the power supply is higher than or equal to the pre-protection value and is lower than the over-current protection value, the method firstly determines whether the power supply has abnormal conditions. When the power supply has abnormal conditions, the method can automatically provide or stop providing a working voltage to a load. When the present output current is further higher than or equal to the over-current protection value, the method takes an over-current protection action. By multi-level monitoring of the current values, the invention properly provides an over-current protection.
H02H 3/08 - Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition, with or without subsequent reconnection responsive to excess current
A cable clip has a body and a fastener. The body has two supporting arms and a connecting arm. Each supporting arm has two ends. The connecting arm is formed between corresponding ends of the supporting arms. The fastener is mounted pivotally on the connecting arm of the body and has a through hole and multiple side surfaces. Distances from the through hole to the side surfaces of the fastener are different. Then, rotating the fastener adjusts the side surfaces abutting a plug to different plugs in different sizes.
09 - Scientific and electric apparatus and instruments
Goods & Services
(1) Electrical regulators; relays; circuit breakers; electronic ballast for electric lighting; electrical connectors; magnetic chokes; AC power protectors; voltage surge protectors; voltage converters; AC/DC converters; DC/DC converters; voltage regulators; electrical power supplies; uninterrupted electrical power supplies; battery chargers; power line filters; electrical filters; high efficiency fluorescent lamp ballast; modems; computer terminaIs; computer disc drives; electric printers; telephones; facsimiles machines; and magnetic coded/IC card readers.
09 - Scientific and electric apparatus and instruments
Goods & Services
Electrical regulators; relays; circuit breakers; electronic ballast for electric lighting; electrical connectors; magnetic chokes; AC power protectors; voltage surge protectors; voltage converters; AC/DC converters; DC/DC converters; uninterrupted electrical power supplies; battery chargers; power line filters; electrical filters; high efficiency fluorescent lamp ballast; modems; computer terminals; computer disc drives; electric printers; facsimile machines; magnetic coded/IC card readers; parts and fittings for all the aforesaid goods.
09 - Scientific and electric apparatus and instruments
Goods & Services
Electrical regulators; relays; circuit breakers; electronic ballast for electric lighting; electrical connectors; magnetic chokes; AC power protectors; voltage surge protectors; voltage converters; AC/DC converters; DC/DC converters; voltage regulators; electrical power supplies; uninterrupted electrical power supplies; battery chargers; power line filters; electrical filters; high efficiency fluorescent lamp ballast; modems; computer terminals; computer disc drives; electric printers; [ telephones; ] facsimile machines; and magnetic coded/IC card readers
09 - Scientific and electric apparatus and instruments
Goods & Services
ELECTRICAL REGULATORS; [RELAYS; CIRCUIT BREAKERS; ELECTRONIC BALLAST FOR ELECTRIC LIGHTING; ELECTRICAL CONNECTORS;] MAGNETIC CHOKES; AC POWER PROTECTORS; VOLTAGE SURGE PROTECTORS; VOLTAGE CONVERTERS; AC/DC CONVERTERS; DC/DC CONVERTERS; VOLTAGE REGULATORS; POWER SUPPLIES; UNINTERRUPTED POWER SUPPLIES; BATTERY CHARGERS;[ POWER LINE FILTERS; ELECTRICAL FILTERS; HIGH EFFICIENCY FLUORESCENT LAMP BALLAST; MODEMS; COMPUTER TERMINALS; COMPUTER DISC DRIVES; ELECTRIC PRINTERS;] [ TELEPHONES; ] [FACSIMILE MACHINES; AND MAGNETIC CODED/IC CARD READERS]
