Systems, devices, and methods for attenuating upset signals from measurement signals in high-temperature environments including an upset event detector configured to determine if an upset event exists in a measurement signal; and a processor in communication with the upset event detector, where the processor is configured to: compensate the measurement signal for the upset event if the upset event is determined to exist by the upset event detector.
G01K 7/16 - Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat using resistive elements
G01K 15/00 - Testing or calibrating of thermometers
G01L 1/22 - Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluidsMeasuring force or stress, in general by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress using resistance strain gauges
2.
ELECTRONIC SNUBBER FOR ELIMINATION OF SWITCH CONTACT IMPEDANCE INCREASE AND ARC CONTAMINANT DEPOSITION
Systems, devices, and methods for a switch (110) comprising two or more contacts (122, 123, 502, 504, 506, 602, 604, 606, 702, 704, 706), where the switch is configured to transition between an open state and a closed state; and a circuit (100) comprising a snubber circuit (102) in communication with the switch (110), where a snubber circuit (102) or energy limiting isolator circuit is configured to eliminate arcing during the transition between the closed state and the open state by limiting voltage that prevents arcing sufficient to trigger a chemical breakdown of a surrounding atmosphere on at least one of the two or more contacts (122, 123, 502, 504, 506, 602, 604, 606, 702, 704, 706).
H01H 50/86 - Means for introducing a predetermined time delay between the initiation of the switching operation and the opening or closing of the contacts
3.
ELECTRONIC SNUBBER FOR ELIMINATION OF SWITCH CONTACT IMPEDANCE INCREASE AND ARC CONTAMINANT DEPOSITION
Systems, devices, and methods for a switch comprising two or more contacts, where the switch is configured to transition between an open state and a closed state; and a circuit comprising a snubber circuit in communication with the switch, where a snubber circuit or energy limiting isolator circuit is configured to eliminate arcing during the transition between the closed state and the open state by limiting voltage that prevents arcing sufficient to trigger a chemical breakdown of a surrounding atmosphere on at least one of the two or more contacts.
Systems, devices, and methods for measuring linear displacement (position) utilizing an electronic linear variable differential transformer (LVDT) simulator are disclosed including a pressure sensor (12) configured to generate an input alternating current (AC) signal (23) based on a detected pressure change of the pressure sensor (12); and an electronic linear variable differential transformer (LVDT) simulator (22) including: a rectifier (24) configured to receive the input AC signal (23) and generate a direct current (DC) signal (25), and an electronic bridge sensor (26) configured to receive the DC signal (25) and generate an output electrical signal (28), where the output electrical signal (28) provides measurement data of the detected pressure change.
G01D 5/14 - Mechanical means for transferring the output of a sensing memberMeans for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for convertingTransducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage
G01D 5/20 - Mechanical means for transferring the output of a sensing memberMeans for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for convertingTransducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature
G01D 5/22 - Mechanical means for transferring the output of a sensing memberMeans for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for convertingTransducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature differentially influencing two coils
G01L 13/06 - Devices or apparatus for measuring differences of two or more fluid pressure values using electric or magnetic pressure-sensitive elements
G01D 5/12 - Mechanical means for transferring the output of a sensing memberMeans for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for convertingTransducers not specially adapted for a specific variable using electric or magnetic means
G01D 5/18 - Mechanical means for transferring the output of a sensing memberMeans for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for convertingTransducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying effective impedance of discharge tubes or semiconductor devices
G01L 13/02 - Devices or apparatus for measuring differences of two or more fluid pressure values using elastically-deformable members or pistons as sensing elements
G01L 13/04 - Devices or apparatus for measuring differences of two or more fluid pressure values using floats or liquids as sensing elements
5.
TWO WIRE PRESSURE INDICATING SWITCH WITH ALL ELECTRONIC ARCHITECTURE WITH MILLIVOLT OPERATING SUPPLY
Systems, devices, and methods for a two wire detection circuit powered system comprising: an electronic switch circuit configured to sense a pressure level above or below a predetermined value and indicate an open or closed switch condition, where the electronic switch circuit provides a contact resistance voltage of about 20 mV in the closed switch condition; and an energy harvester configured to convert 20 mV when the electronic switch circuit is in the closed switch condition to an operating voltage between 3.6 Volts and 5 Volts for the electronic switch circuit to operate without an additional power source.
H01H 35/24 - Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow
G01L 5/1623 - Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring several components of force using variations in ohmic resistance of pressure sensitive conductors
6.
HIGH TEMPERATURE OPERATING ELECTRONIC CIRCUIT FOR PRESSURE OR TEMPERATURE SENSOR
Systems, devices, and methods for attenuating upset signals from measurement signals in high-temperature environments including an upset event detector (180) configured to determine if an upset event exists in a measurement signal; and a processor (190) in communication with the upset event detector (180), where the processor is configured to: compensate the measurement signal for the upset event if the upset event is determined to exist by the upset event detector (180).
Systems, devices, and methods for a switch (110) comprising two or more contacts (122, 123, 502, 504, 506, 602, 604, 606, 702, 704, 706), where the switch is configured to transition between an open state and a closed state; and a circuit (100) comprising a snubber circuit (102) in communication with the switch (100), wherein the snubber circuit (102) is configured to eliminate arcing during the transition between the closed state and the open state by limiting voltage that prevents arcing sufficient to trigger a chemical breakdown of a surrounding atmosphere on at least one of the two or more contacts (122, 123, 502, 504, 506, 602, 604, 606, 702, 704, 706).
H02H 3/00 - Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition, with or without subsequent reconnection
H01H 9/30 - Means for extinguishing or preventing arc between current-carrying parts
H02H 7/00 - 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
H01H 9/34 - Stationary parts for restricting or subdividing the arc, e.g. barrier plate
H02H 3/22 - 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 of short duration, e.g. lightning
8.
TWO WIRE PRESSURE INDICATING SWITCH WITH ALL ELECTRONIC ARCHITECTURE WITH MILLIVOLT OPERATING SUPPLY
Systems, devices, and methods for a two wire detection circuit powered system (100) comprising: an electronic switch circuit (128) configured to sense a pressure level above or below a predetermined value and indicate an open or closed switch condition, where the electronic switch circuit provides a contact resistance voltage of about 20 mV in the closed switch condition; and an energy harvester (104) configured to convert 20 mV when the electronic switch circuit is in the closed switch condition to an operating voltage between 3.6 Volts and 5 Volts for the electronic switch circuit to operate without an additional power source.
G01L 7/00 - Measuring the steady or quasi-steady pressure of a fluid or a fluent solid material by mechanical or fluid pressure-sensitive elements
G01L 9/14 - Measuring steady or quasi-steady pressure of a fluid or a fluent solid material by electric or magnetic pressure-sensitive elementsTransmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means involving the displacement of magnets, e.g. electromagnets
G01L 15/00 - Devices or apparatus for measuring two or more fluid pressure values simultaneously
9.
TWO WIRE PRESSURE INDICATING SWITCH WITH ALL ELECTRONIC ARCHITECTURE WITH MILLIVOLT OPERATING SUPPLY
Systems, devices, and methods for a two wire detection circuit powered system (100) comprising: an electronic switch circuit (128) configured to sense a pressure level above or below a predetermined value and indicate an open or closed switch condition, where the electronic switch circuit provides a contact resistance voltage of about 20 mV in the closed switch condition; and an energy harvester (104) configured to convert 20 mV when the electronic switch circuit is in the closed switch condition to an operating voltage between 3.6 Volts and 5 Volts for the electronic switch circuit to operate without an additional power source.
G01L 15/00 - Devices or apparatus for measuring two or more fluid pressure values simultaneously
G01L 9/14 - Measuring steady or quasi-steady pressure of a fluid or a fluent solid material by electric or magnetic pressure-sensitive elementsTransmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means involving the displacement of magnets, e.g. electromagnets
G01L 7/00 - Measuring the steady or quasi-steady pressure of a fluid or a fluent solid material by mechanical or fluid pressure-sensitive elements
10.
Two wire pressure indicating switch with all electronic architecture with millivolt operating supply
Systems, devices, and methods for a two wire detection circuit powered system comprising: an electronic switch circuit configured to sense a pressure level above or below a predetermined value and indicate an open or closed switch condition, wherein the electronic switch circuit provides a contact resistance voltage of about 20 mV in the closed switch condition; and an energy harvester configured to convert 20 mV when the electronic switch circuit is in the closed switch condition to an operating voltage between 3.6 Volts and 5 Volts for the electronic switch circuit to operate without an additional power source.
G01L 5/1623 - Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring several components of force using variations in ohmic resistance of pressure sensitive conductors
H01H 35/24 - Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow
G01L 27/00 - Testing or calibrating of apparatus for measuring fluid pressure
11.
Method of preventing moisture intrusion through the cable exit of an enclosure comprising terminals
Systems, devices, and methods including: a cable; a housing having a tapered exit hole connected to an internal volume; a tapered seal having a tapered outer surface and an inner aperture, where the inner aperture of the tapered seal receives the cable; an encapsulant disposed in the internal volume and about one or more wires of the cable; and a compression cap placed over the tapered seal and about a flange of the housing to compress the tapered seal into the tapered exit hole; where compression from the compression cap forces the encapsulant up inside the cable and around the one or more wires of the cable, and where curing of the encapsulant seals the cable from moisture incursion.
H01R 13/52 - Dustproof, splashproof, drip-proof, waterproof, or flameproof cases
H01R 43/00 - Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
H01R 13/405 - Securing in non-demountable manner, e.g. moulding, riveting
H01R 13/504 - BasesCases composed of different pieces different pieces being moulded, cemented, welded, e.g. ultrasonic, or swaged together
12.
Method of sealing cable exit for moisture and vapor intrusion
Systems, devices, and methods including one or more isolation breaks connected between one or more first portions of a first wire and one or more second portions of a second wire, wherein the one or more isolation breaks prevent moisture intrusion between the one or more first portions of the first wire and the one or more second portions of the second wire; an inner housing; an upper compressing plate; a lower compressing plate; a grommet and an outer housing sized to receive the inner housing; where the one or more isolation breaks are connected between the one or more first portions of the first wire and the one or more second portions of the second wire prior to compressing the grommet between the upper compressing plate and the lower compressing plate.
A Micro Electro-Mechanical System (MEMS) device comprises an evaluator circuit that receives a temperature signal, where the evaluator circuit compares the received temperature signal to a lower threshold value and an upper threshold value, and where the evaluator circuit generates an evaluation signal indicating when the temperature signal is between the lower threshold value and the upper threshold value; and a loading circuit that receives the evaluation signal, where the loading circuit generates a first pre-set output signal indicating when the temperature signal is between the lower threshold value and the upper threshold value, and wherein the loading circuit generates a second pre-set output signal when the temperature signal is not between the lower threshold value and the upper threshold value, such that the MEMS device functions as a 2-wire electronic sense circuit providing both an indication state and deriving power from an external two-wire sense circuit.
H02H 5/04 - Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection responsive to abnormal temperature
G05B 1/01 - Comparing elements, i.e. elements for effecting comparison directly or indirectly between a desired value and existing or anticipated values electric
G05D 23/30 - Automatic controllers with an auxiliary heating device affecting the sensing element, e.g. for anticipating change of temperature
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
An electronic temperature switch (10), comprises a measurement circuit (11) that measures temperature and generates an temperature signal corresponding to the sensed temperature; an evaluator circuit (12) that receives said temperature signal and compares said temperature signal to a lower threshold value and an upper threshold value, and generates an evaluation signal indicating when said temperature signal is between the lower temperature threshold value and an higher temperature threshold value; and a loading circuit (13) that in response to the evaluator circuit, generates a first pre-set output signal indicating when the temperature signal is between the lower threshold value and the higher threshold value, and a second pre-set output signal when the temperature signal is not between the lower threshold value and the higher threshold value.
H02H 5/04 - Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection responsive to abnormal temperature
G01R 19/165 - Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
G05B 1/01 - Comparing elements, i.e. elements for effecting comparison directly or indirectly between a desired value and existing or anticipated values electric
G05D 23/30 - Automatic controllers with an auxiliary heating device affecting the sensing element, e.g. for anticipating change of temperature
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
A pressure switch including: a spring blade; a ram pin having an angled bottom surface and laterally restrained in movement, where upward movement of the ram pin engages the spring blade such that the spring blade snap deflects to an engaged position, and where downward movement of the ram pin engages the spring blade such that the spring blade snap deflects to an unengaged position; a ball bearing in contact with the angled bottom surface of the ram pin; and an adjustment screw laterally restraining the ball bearing in movement, where a lateral inward movement of the adjustment screw relative to an outside surface of the pressure switch causes an upward movement of the ram pin, and where a lateral outward movement of the adjustment screw relative to the outside surface of the pressure switch causes a downward movement of the ram pin.
A flow switch including: a fluid inlet for receiving fluid in-line relative to a flow switch body; a poppet valve disposed in the fluid inlet and having a variable location relative to the flow switch body; an actuator pin affixed to the poppet valve; a helical spring disposed about the actuator pin, where the poppet valve is spring-loaded via the spring; and where the spring-loaded poppet valve is configured to move away from the fluid inlet with increasing volumetric fluid flow and towards the fluid inlet with decreasing volumetric fluid flow.
Systems, devices, and methods including: a cable (102); a housing (120, 122, 304, 306) having a tapered exit hole (110) connected to an internal volume (116); a tapered seal (112) having a tapered outer surface (134) and an inner aperture (128), where the inner aperture of the tapered seal receives the cable; an encapsulant (118) disposed in the internal volume and about one or more wires of the cable; and a compression cap (114) placed over the tapered seal and about a flange (138) of the housing to compress the tapered seal into the tapered exit hole; where compression from the compression cap forces the encapsulant up inside the cable and around the one or more wires of the cable, and where curing of the encapsulant seals the cable from moisture incursion.
Systems, devices, and methods for inserting a wire (104, 106) through apertures (132, 134, 136, 138) in an inner housing (120), an upper plate (126), a lower plate (130), and a grommet (122); connecting the wire via an isolation break (108); and inserting the inner housing into an outer housing (102); where the inner housing compresses the grommet between the upper plate and the lower plate to form a seal about the metal isolation break.
An assembly including: a disk spring; a plurality of normally closed contacts disposed in a plane below the disk spring; a plurality of normally open contacts disposed in a plane above the disk spring; a pivot ring supporting a lower surface of the disk spring; and an actuating pin having a shoulder in contact with an upper surface of the disk spring; where a movement of the actuating pin away from a header assembly snap deflects the disk spring to a first position to contact the plurality of normally open contacts, and a movement of the actuating pin towards the header assembly snap deflects the disk spring to a second position to contact the plurality of normally closed contacts.
A device, including: a sensor circuit that senses the state of contact impedance of a mechanical electrical switch; and a switch-off circuit that represents a sensed high impedance contact of the switch as a low or constant impedance, where the sensor circuit detects an open or closed condition of the switch by sensing a voltage across the switch passing a threshold value.
G01R 31/327 - Testing of circuit interrupters, switches or circuit-breakers
H01H 9/54 - Circuit arrangements not adapted to a particular application of the switching device and for which no provision exists elsewhere
H03K 17/30 - Modifications for providing a predetermined threshold before switching
H01H 9/16 - Indicators for switching condition, e.g. "on" or "off"
G01R 27/20 - Measuring earth resistanceMeasuring contact resistance of earth connections, e.g. plates
H03K 17/60 - 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 bipolar transistors
An electronic temperature switch, comprises a measurement circuit that measures temperature and generates an temperature signal corresponding to the sensed temperature; an evaluator circuit that receives said temperature signal and compares said temperature signal to a lower threshold value and an upper threshold value, and generates an evaluation signal indicating when said temperature signal is between the lower temperature threshold value and an higher temperature threshold value; and a loading circuit that in response to the evaluator circuit, generates a first pre-set output signal indicating when the temperature signal is between the lower threshold value and the higher threshold value, and a second pre-set output signal when the temperature signal is not between the lower threshold value and the higher threshold value.
H02H 5/04 - Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection responsive to abnormal temperature
G05B 1/01 - Comparing elements, i.e. elements for effecting comparison directly or indirectly between a desired value and existing or anticipated values electric
G05D 23/30 - Automatic controllers with an auxiliary heating device affecting the sensing element, e.g. for anticipating change of temperature
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
G01R 19/165 - Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
An assembly including: a disk spring; a plurality of normally closed contacts disposed in a plane below the disk spring; a plurality of normally open contacts disposed in a plane above the disk spring; a pivot ring supporting a lower surface of the disk spring; and an actuating pin having a shoulder in contact with an upper surface of the disk spring; where a movement of the actuating pin away from a header assembly snap deflects the disk spring to a first position to contact the plurality of normally open contacts, and a movement of the actuating pin towards the header assembly snap deflects the disk spring to a second position to contact the plurality of normally closed contacts.
H01H 5/00 - Snap-action arrangements, i.e. in which during a single opening operation or a single closing operation energy is first stored and then released to produce or assist the contact movement
H01H 5/30 - Energy stored by deformation of elastic members by buckling of disc springs
H01H 3/02 - Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch
A flow switch including: a fluid inlet for receiving fluid in-line relative to a flow switch body; a poppet valve disposed in the fluid inlet and having a variable location relative to the flow switch body; an actuator pin affixed to the poppet valve; a helical spring disposed about the actuator pin, where the poppet valve is spring-loaded via the spring; and where the spring-loaded poppet valve is configured to move away from the fluid inlet with increasing volumetric fluid flow and towards the fluid inlet with decreasing volumetric fluid flow.
A pressure switch including: a spring blade; a ram pin having an angled bottom surface and laterally restrained in movement, where upward movement of the ram pin engages the spring blade such that the spring blade snap deflects to an engaged position, and where downward movement of the ram pin engages the spring blade such that the spring blade snap deflects to an unengaged position; a ball bearing in contact with the angled bottom surface of the ram pin; and an adjustment screw laterally restraining the ball bearing in movement, where a lateral inward movement of the adjustment screw relative to an outside surface of the pressure switch causes an upward movement of the ram pin, and where a lateral outward movement of the adjustment screw relative to the outside surface of the pressure switch causes a downward movement of the ram pin.
An electronic temperature switch (10), comprises a measurement circuit (11) that measures temperature and generates an temperature signal corresponding to the sensed temperature; an evaluator circuit (12) that receives said temperature signal and compares said temperature signal to a lower threshold value and an upper threshold value, and generates an evaluation signal indicating when said temperature signal is between the lower temperature threshold value and an higher temperature threshold value; and a loading circuit (13) that in response to the evaluator circuit, generates a first pre-set output signal indicating when the temperature signal is between the lower threshold value and the higher threshold value, and a second pre-set output signal when the temperature signal is not between the lower threshold value and the higher threshold value.
G01K 7/02 - Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat using thermoelectric elements, e.g. thermocouples
G01F 1/68 - Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using thermal effects
G01K 7/01 - Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat using semiconducting elements having PN junctions
G11C 7/04 - Arrangements for writing information into, or reading information out from, a digital store with means for avoiding disturbances due to temperature effects
H01H 37/14 - Means for adjustment of "on" or "off" operating temperature by anticipatory electric heater
A device (11), including: a sensor circuit (15) that senses the state of contact impedance of a mechanical electrical switch (12); and a switch-off circuit (13) that represents a sensed high impedance contact of the switch as a low or constant impedance, where the sensor circuit (15) detects an open or closed condition of the switch (12) by sensing a voltage across the switch passing a threshold value.
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
27.
HIGH DIELECTRIC STRENGTH AND DC INSULATION FOR PRESSURE SENSORS AND SWITCHES
Disclosed herein is an electronic sensor device includes a sensing module having an interior space configured to measure an environmental property. The device further includes a non-conductive spacer on which the sensing module is seated, the non-conductive spacer including a flange having a thickness dimension for seating the sensing module. A pressure port contains both the sensing module and the non-conductive spacer. A non-conductive sealant adhesive fills a gap between the non-conductive spacer and the sensing module, wherein the gap is determined by the thickness dimension of the flange.
An apparatus includes a sensor excited by an input voltage adapted to provide a sensor output first voltage corresponding to a physical input excitation. A transformation circuit device provides the operational voltage to the sensor, detects the sensor output first voltage, nulls an amount of offset voltage in the sensor output first voltage, amplifies the nulled offset sensor output first voltage, and provide a noise filtered and temperature compensated output second voltage. A simulator circuit receives the compensated output second voltage and provides an output third voltage representative of a simulated bridge sensor, being absent of offset voltage, and being independent of temperature dependence and noise in the sensor.
G01R 17/16 - AC or DC measuring bridges with discharge tubes or semiconductor devices in one or more arms of the bridge, e.g. voltmeter using a difference amplifier
G01R 21/00 - Arrangements for measuring electric power or power factor
An apparatus includes a sensor excited by an input voltage adapted to provide a sensor output first voltage corresponding to a physical input excitation. A transformation circuit device provides the operational voltage to the sensor, detects the sensor output first voltage, nulls an amount of offset voltage in the sensor output first voltage, amplifies the nulled offset sensor output first voltage, and provide a noise filtered and temperature compensated output second voltage. A simulator circuit receives the compensated output second voltage and provides an output third voltage representative of a simulated bridge sensor, being absent of offset voltage, and being independent of temperature dependence and noise in the sensor.
patents
