09 - Scientific and electric apparatus and instruments
17 - Rubber and plastic; packing and insulating materials
Goods & Services
(1) Regulators for controlling electricity, namely temperature transmitters, DC/DC transmitters, AC to DC transmitters, DC to AC transmitters, current converters, signal processors and voltage regulators; Power supplies, namely, voltage regulators and voltage stabilizing power supplies; Isolation amplifiers, namely, current converters and radio frequency transmitters; Computers and peripheral equipment, namely, computer keyboards, mice and monitors; computer operating system software; computer operating systems.
(2) Intrinsically safe barriers, namely, insulators for cables, electrical insulation and electric, thermal and acoustic insulators.
The present invention relates to a current loop powered DC-DC switch mode converter for use as a local isolated low power supply for electronic circuits such as current loop transmitters where the requirements for supply efficiency and cost of the implementation is critical. It is the object of the invention to provide a simple and low cost solution for driving a synchronous rectifier thereby improving the supply efficiency, especially at low output voltages.
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 3/07 - Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using resistors or capacitors, e.g. potential divider using capacitors charged and discharged alternately by semiconductor devices with control electrode
H02M 1/08 - Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
The present invention relates to a system and a method for pulse width modulation and demodulation of a continuous input signal, which system is configured to receive a continuous input to an analog modulator, which system comprises a demodulator generating a continuous output signal. It is the object of the pending patent application to use an analog modulator for transmitting the signal from the input stage over to an output stage. A further object of the pending patent application is to preserve the signal integrity in regard to precision and to minimize both non-linearities and distortion side effects. The object can be fulfilled by the analog modulator being formed as a composite phase modulator which composite phase modulator comprises at least one feedback loop which feedback loop determines the width of a low-level discrete signal, which composite phase modulator comprises at least one feed-forward loop, which feed-forward loop determines the width of a high-level discrete signal as a function of the continuous input. Hereby it can be achieved that timing between discrete low-level and high-level forms a discontinuous output signal representing the continuous input.
A circuit for generation of a reference voltage for an electronic system, which circuit comprises at least one digital buffer (U21, U31, U32, U41, U51), a low pass filter (R21, C21; R31, C31; R41, C41; R51, C51) and an operational amplifier (OA21, OA31, OA41, OA51)), which circuit is adapted to revive an input in the form of a bandgap reference voltage into the digital buffer, which digital buffer is adapted to receive a digital input from a Pulse Width Modulated (PWM) signal, which digital buffer is adapted to generate an output signal adapted to be fed to the low pass filter, which output signal after filtration is adapted to be fed to a positive input terminal of the operational amplifier, which operational amplifier comprises a feedback circuit, which feedback circuit comprises at least one capacitor (C22, C32, C44, C54) adapted to be connected from an output terminal of the operational amplifier towards a negative input terminal of the operational amplifier so as to form an integrator, wherein the feedback circuit further comprises at least one chopped signal path (R22, S21; R33, R34, S32; R33, R35, C35, S31), which chopped signal is adapted to be modulated by the output signal of the digital buffer.
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
H03F 3/347 - DC amplifiers in which all stages are DC-coupled with semiconductor devices only in integrated circuits
H03F 3/393 - DC amplifiers with modulator at input and demodulator at outputModulators or demodulators specially adapted for use in such amplifiers with semiconductor devices only with field-effect devices
An optical keypad for use in hazardous areas and which can ensure safe and reliable detection of keystrokes through an at least 8 mm thick glass window, as is required for electronics equipment located in hazardous explosive areas (In accordance with ATEX Directive 94/9/EC and similar requirements) is obtained by providing a system in which at least 6 LEDs are lit in a pseudo-random sequence, modulated by a pseudo-random frequency and the interval between the lighting of each of the LEDs is change randomly to avoid interference between collocated keypads and light from other sources, such as daylight and artificial light.
H03K 17/94 - Electronic switching or gating, i.e. not by contact-making and -breaking characterised by the way in which the control signals are generated
H03M 11/00 - Coding in connection with keyboards or like devices, i.e. coding of the position of operated keys
G01V 8/20 - Detecting, e.g. by using light barriers using multiple transmitters or receivers
G06F 3/042 - Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means
A measuring system and a method for operating it to detect wire breakage based on the measured current or voltage in which the impedance of at least a first sensor is measured and the result transmitted to a connected system. The invention is capable of detecting wire breakage and sensor failure in temperature sensor systems simultaneous with the temperature measurement by the measuring system comprising an AC current source which generates an AC current that is transmitted through the wires, and through at least the first sensor, measuring system analyzing changes in the phase angle between the current and voltage of the AC signal. If the difference in the frequency of the signal affecting the impedance or voltage of the sensor, and the frequency of the injected wire testing signal is sufficiently high, it is possible to distinguish between the first measuring signals and the second wire testing signal.
G01R 31/02 - Testing of electric apparatus, lines, or components for short-circuits, discontinuities, leakage, or incorrect line connection
G01K 15/00 - Testing or calibrating of thermometers
G01K 7/02 - Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat using thermoelectric elements, e.g. thermocouples
G01K 7/20 - Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat using resistive elements the element being a linear resistance, e.g. platinum resistance thermometer in a specially-adapted circuit, e.g. bridge circuit
G01R 31/28 - Testing of electronic circuits, e.g. by signal tracer
The pending patent application concerns a system adapted to perform communication with at least a first device, which communication is performed by a first communication performed by an analogue current signal generator, which analogue current signal is communicating over a communication line, which system further performs a second communication performed by a voltage injector at the communication line. It is an object of the pending patent application to achieve a system and a method for efficient communication by a first and a second communication system at a common communication line. The object of the patent application can be achieved by the second communication being performed by injection of a frequency-modulated voltage signal onto the first analogue current signal. Hereby it can be achieved that an analogue signal communication line at the same time can carry a frequency-modulated signal so that both a first analogue communication and a second frequency-modulated communication are effected over the same line. In this way a highly energy-efficient way of communication can be performed.
A power supply and a method for operating the power supply in which a transformer connected to an excitation circuit which is adapted to be connected to a power source, which secondary winding is connected to at least one first power supply. From prior art. switch mode power supply based on fly back technology is well known. Here a power supply with a power inlet is provided with a plurality of separated power outlets. One of the lines connected to the primary winding is further connected to a discharge control circuit, which discharge control circuit is further connected to at least one second power supply and the primary winding is further connected to a discharge circuit where at least one further power supply is connected.
H02J 3/38 - Arrangements for parallelly feeding a single network by two or more generators, converters or transformers
H02J 3/00 - Circuit arrangements for ac mains or ac distribution networks
G05F 1/67 - Regulating electric power to the maximum power available from a generator, e.g. from solar cell
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
The present invention relates to a system and a method for pulse width modulation and demodulation of a continuous input signal, which system is configured to receive a continuous input to an analog modulator, which system comprises a demodulator generating a continuous output signal. It is the object of the pending patent application to use an analog modulator for transmitting the signal from the input stage over to an output stage. A further object of the pending patent application is to preserve the signal integrity in regard to precision and to minimize both non-linearities and distortion side effects. The object can be fulfilled by the analog modulator being formed as a composite phase modulator which composite phase modulator comprises at least one feedback loop which feedback loop determines the width of a low-level discrete signal, which composite phase modulator comprises at least one feed-forward loop, which feed-forward loop determines the width of a high-level discrete signal as a function of the continuous input. Hereby it can be achieved that timing between discrete low-level and high-level forms a discontinuous output signal representing the continuous input.
H03F 3/217 - Class D power amplifiersSwitching amplifiers
H03F 3/387 - DC amplifiers with modulator at input and demodulator at outputModulators or demodulators specially adapted for use in such amplifiers with semiconductor devices only
H03K 9/08 - Demodulating pulses which have been modulated with a continuously-variable signal of duration- or width-modulated pulses
A low-power power supply for an electronic circuit uses an existing current input and converts the current to a higher voltage sufficient for supplying an electronic circuit. The input current generates a defined input voltage, which input voltage is initially generated by voltage drop by the input current passing at least one diode in the open direction of the diode. The input voltage, through a transistor, charges a plurality of switched capacitor networks in a first mode of operation, and in a second mode of operation, the switched capacitor networks are coupled in series for multiplying the input voltage to second higher voltage that is supplied to a oscillating circuit. The oscillating circuit drives the input current via a transformer and half bridge driver to convert a low voltage current supply from a low voltage current into a low current and higher voltage useable for supplying a small electronic circuit.
H02M 3/07 - Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using resistors or capacitors, e.g. potential divider using capacitors charged and discharged alternately by semiconductor devices with control electrode
H02M 7/537 - 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 using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters
A system for galvanic isolation between an analog input signal and an analog output signal, which system performs an analog to digital conversion of the input signals into input digital data. As a result, input parameters can be corrected in a nearly perfect way.
H03M 1/06 - Continuously compensating for, or preventing, undesired influence of physical parameters
H03M 1/46 - Analogue value compared with reference values sequentially only, e.g. successive approximation type with digital/analogue converter for supplying reference values to converter
G01D 3/02 - Measuring arrangements with provision for the special purposes referred to in the subgroups of this group with provision for altering or correcting the transfer function
The present invention relates to measuring systems and a method for operating a measuring system for detection of wire breakage in measuring systems which measuring system based on the measured current or voltage measures the impedance of at least the first censor which measuring system transmit the result of the measurement of the impedance to a connected system. It is the object of the invention to be capable of detecting wire breakage and sensor failure in temperature sensor systems simultaneous with the temperature measurement. The object can be fulfilled by a system where the measuring system can comprise an AC current source, which AC current source generates an AC current, which AC current is transmitted through the wires, and through at least the first censor, which measuring system analyses changes in the phase angle between current and voltage of the AC signal. It is hereby possible that if the difference in the frequency of the signal affecting the impedance or voltage of the sensor, and the frequency of the injected wire testing signal is sufficiently high so that it is possible in the system, that receives the signals to distinguish between the first measuring signals and the second wire testing signal.
G01K 7/02 - Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat using thermoelectric elements, e.g. thermocouples
G01K 7/20 - Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat using resistive elements the element being a linear resistance, e.g. platinum resistance thermometer in a specially-adapted circuit, e.g. bridge circuit
G01K 15/00 - Testing or calibrating of thermometers
G01R 31/02 - Testing of electric apparatus, lines, or components for short-circuits, discontinuities, leakage, or incorrect line connection
The present invention relates to a power supply and a method for operating the power supply comprising a transformer connected to an excitation circuit which is adapted to be connected to a power source, which secondary winding is connected to at least one first power supply. From prior art is switch mode power supply based on fly back technology well known. It is an object of the pending application to a power supply with a power inlet with a plurality of separated power outlets. The object can be fulfilled if one of the lines connected to the primary winding is further connected to a discharge control circuit, which discharge control circuit is further connected to at least one second power supply. In the pending application the primary winding is further connected to a discharge circuit where at least one further power supply is connected.
H02J 3/38 - Arrangements for parallelly feeding a single network by two or more generators, converters or transformers
H02M 7/48 - 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
G05F 1/67 - Regulating electric power to the maximum power available from a generator, e.g. from solar cell
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
17 - Rubber and plastic; packing and insulating materials
Goods & Services
Electric and electronic apparatus and instruments for
regulating and controlling electricity, parts and fittings
thereof (not included in other classes); computers and
peripheral equipment, parts and fittings (not included in
other classes) thereof, including print cards and software,
measuring instruments and display units thereof; isolating
amplifiers in the form of electric components, electric
converters and transmitters, three-band controllers. Components in the form of insulators.
09 - Scientific and electric apparatus and instruments
17 - Rubber and plastic; packing and insulating materials
Goods & Services
Electric and electronic apparatus and instruments for
regulating and controlling electricity, parts and fittings
thereof (not included in other classes); computers and
peripheral equipment, parts and fittings (not included in
other classes) thereof, including printcards and software,
measuring instruments and display units thereof; isolating
amplifiers in the form of electric components, electric
converters and transmitters, three-band controllers. Insulators.
09 - Scientific and electric apparatus and instruments
17 - Rubber and plastic; packing and insulating materials
Goods & Services
Electric and electronic apparatus and instruments for
regulating and controlling electricity, parts and fittings
thereof (not included in other classes); computers and
peripheral equipment, parts and fittings (not included in
other classes) thereof, including printcards and software,
measuring instruments and display units thereof; isolating
amplifiers in the form of electric components, electric
converters and transmitters, three-band controllers. Components in the form of insulators.
17.
MAGNETIC BALANCED CONVERTER WITH ISOLATION BARRIER
A converter (1) comprising at least one primary side (2) having a first set of coils (3) magnetically coupled to at least one secondary side (4) having at least a second set of coils (5), wherein the primary side is electrically isolated from the secondary side by an isolation barrier (8), wherein one of the secondary sides is configured to be con- nected to an external output unit (10), wherein the primary side (2) is magnetically coupled to another secondary side (6) having a third set of coils (7) which coils are configured to be coupled to an external input unit (11), wherein the two secondary sides (4, 6) are electrically isolated from each other by a second isolation barrier (9), wherein the three sets of coils (3, 5, 7) are magnetically coupled to each other via a common magnetic path. The converter provides an isolated current-to-current transfer between the input side and the output side which replicates the input current with high accuracy.
H02M 1/40 - Means for preventing magnetic saturation
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
18.
Converter with shared current path and isolation barrier
A converter (1) comprisingat least one or more transformers (2, 5) having at least one primary side (8) magnetically coupled to at leastone secondary side (10), wherein the primary side (8) is electrically isolated from the secondary side (10) by an isolation barrier (11), wherein a first transformer (2) comprises a first set of coils (3) and a sec- ond set of coils (4) and a second transformer (5) comprises a third set of coils (6) and a fourth set of coils (7) where the first set of coils (3) is connected in series to the third set of coils (6), wherein one (9) of the secondary sides is configured to be connected to an external output unit(13), wherein another secondary side (10) is configured to be connected to an external input source (14), wherein the two secondary sides (9, 10) are electrically isolated from each other by a second isolation barrier (12), wherein the pri- mary side (8) comprises means configured to drive the transformers (2, 5) which is configured to be connectedto an external power source (17). The converter usesa shared current path and an isolated current-to-current transfer between the input side and the output side to replicate the input currentto an output current with high accura- cy.
The present invention relates to a system for galvanic isolation between an analogue input signal and an analogue output signal, which system performs an analogue to digital conversion of the input signals into input digital data. Hereby it is achieved that any correction of input parameters can be performed in a nearly perfect way.
H03M 3/00 - Conversion of analogue values to or from differential modulation
G01D 3/02 - Measuring arrangements with provision for the special purposes referred to in the subgroups of this group with provision for altering or correcting the transfer function
H03M 1/08 - Continuously compensating for, or preventing, undesired influence of physical parameters of noise
H03M 7/30 - CompressionExpansionSuppression of unnecessary data, e.g. redundancy reduction
The present invention relates to a low-power power supply for an electronic circuit. It is the object of the invention to achieve a local low power supply using an existing current input (4) and convert the current to a higher voltage sufficient for the supply of an electronic circuit. The object can be fulfilled if the input current is generating a defined input voltage (19), which input voltage (10) is initially generated by voltage drop by the input current passing at least one diode (12a, 12b) in the open direction of the said diode (12a, 12b), which input voltage through a transistor (13) is charging a plurality of switched capacitor networks (14 a-n) in a first mode of operation, which switched capacitor networks (14 a-n) in a second mode of operation are coupled serially for multiplying the input voltage (10) to second higher voltage (16), which second higher voltage (16) is supplied to an oscillating circuit (18), which oscillating circuit (18) via a transformer (20) and a half bridge driver (22) drives the input current. Hereby can be achieved that a low voltage current supply can be converted from a low voltage current into a low current and higher voltage useable for the supply of a small electronic circuit.
H02M 3/07 - Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using resistors or capacitors, e.g. potential divider using capacitors charged and discharged alternately by semiconductor devices with control electrode
09 - Scientific and electric apparatus and instruments
17 - Rubber and plastic; packing and insulating materials
Goods & Services
Electric and electronic apparatus and instruments for regulating and controlling electricity; computers and computer peripherals; Print cards, namely, interface cards for data processing equipment in the form of printed circuits; computer software for controlling, monitoring and diagnostic purposes; measuring instruments, local indicators and panel meters; isolating amplifiers in the form of electric components; electric converters, Transmitters of electronic signals; three-band controllers Components in the form of insulators, namely, electric, thermal and acoustic insulators
09 - Scientific and electric apparatus and instruments
17 - Rubber and plastic; packing and insulating materials
Goods & Services
Electric and electronic apparatus and instruments for regulating and controlling electricity, parts and fittings thereof, namely, temperature transmitters, signal isolation amplifiers, signal transmitters, signal isolators, signal calculators, signal repeaters, signal converters, trip amplifiers, signal controllers, power supplies, voltage regulators, transformers, resistors, potentiometers, relays, electrical connectors, optical communication interfaces, digital and analog interfaces, and programming units for the foregoing; computers and computer peripheral equipment; measuring instruments and display units thereof, namely, electric meters and display units for such meters; isolating amplifiers in the form of electric components; electric converters; transmitters of electronic signals, three-band electrical controllers Electrical, acoustic and thermal insulators
09 - Scientific and electric apparatus and instruments
17 - Rubber and plastic; packing and insulating materials
Goods & Services
Electric and electronic apparatus and instruments for regulating and controlling electricity, parts and fittings thereof, namely, temperature transmitters, signal isolation amplifiers, signal transmitters, signal isolators, signal calculators, signal repeaters, signal converters, trip amplifiers, signal controllers, power supplies, voltage regulators, transformers, resistors, potentiometers, relays, electrical connectors, optical communication interfaces, digital and analog interfaces, and programming units for the foregoing; computers and computer peripheral equipment; measuring instruments and display units thereof, namely, electric meters and display units for such meters; isolating amplifiers in the form of electric components; electric converters; transmitters of electronic signals, three-band electrical controllers Components in the form of insulators, namely, electrical, acoustic and thermal insulators
A switched-mode power supply (SMPS) and a method of control thereof is described, wherein the SMPS is operable to apply a spread spectrum modulation to a switching driver signal to reduce EMI in the SMPS. The SMPS is operable to perform voltage and current monitoring in parallel to the spread spectrum modulation to provide variable limit threshold detection and shutdown capabilities for circuit protection.
H02M 1/12 - Arrangements for reducing harmonics from AC input or output
H02M 1/44 - Circuits or arrangements for compensating for electromagnetic interference in converters or inverters
H02M 1/32 - Means for protecting converters other than by automatic disconnection
H04B 15/06 - Reducing interference from electric apparatus by means located at or near the interfering apparatus the interference being caused by substantially sinusoidal oscillations, e.g. in a receiver or in a tape-recorder by local oscillators of receivers
A switched-mode power supply (SMPS) and a method of control thereof is described, wherein the SMPS is operable to apply a spread spectrum modulation to a switching driver signal to reduce EMI in the SMPS. The SMPS is operable to perform voltage and current monitoring in parallel to the spread spectrum modulation to provide variable limit threshold detection and shutdown capabilities for circuit protection.
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
H02M 1/44 - Circuits or arrangements for compensating for electromagnetic interference in converters or inverters
H04B 15/00 - Suppression or limitation of noise or interference
A modulation system (70) for a converter system, preferable a delta sigma converter, which has reduced noise in output and gives a flexibility of implementation. Downsampling of a system clock is performed (82,84) to have the comparator output latch (74) operating with a lower clock frequency than the feedback DAC (78). The format of the input and output signals is detectable by input circuit (50) and output circuit (60). A set of constants stored as complementary binary numbers is selected based on the input/output range, reference voltage and the clock frequencies of the feedback DAC and the comparator output latch. A forward pulse calculation unit (86) signal processes the output from the delta sigma converter utilizing the constants and adjusted PWM pulses is sent to the output circuit.
09 - Scientific and electric apparatus and instruments
Goods & Services
Electric and electronic apparatus, parts and fittings thereof; computers and peripheral equipment, parts and fittings thereof, including printcards, panel meters and display units for such meters; isolating amplifiers, signal transmitters and signal converters, and three-band controllers.
09 - Scientific and electric apparatus and instruments
Goods & Services
temperature transmitters; signal isolation amplifiers, signal transmitters, signal isolators, signal calculators, signal repeaters, signal converters, trip amplifiers, signal controllers, power supplies voltage regulators, transformers, digital and analog interfaces, and programming units for the foregoing; resistors, potentiometers, relays, optical communication interfaces, electrical connectors, meters and display units for such meters and for general use
