CA2516158A1 - High voltage regulator for an electric meter power supply - Google Patents

High voltage regulator for an electric meter power supply Download PDF

Info

Publication number
CA2516158A1
CA2516158A1 CA002516158A CA2516158A CA2516158A1 CA 2516158 A1 CA2516158 A1 CA 2516158A1 CA 002516158 A CA002516158 A CA 002516158A CA 2516158 A CA2516158 A CA 2516158A CA 2516158 A1 CA2516158 A1 CA 2516158A1
Authority
CA
Canada
Prior art keywords
switching device
input voltage
voltage
power supply
electrical connection
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002516158A
Other languages
French (fr)
Other versions
CA2516158C (en
Inventor
Kenneth C. Shuey
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Elster Solutions LLC
Original Assignee
Elster Electricity LLC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Elster Electricity LLC filed Critical Elster Electricity LLC
Publication of CA2516158A1 publication Critical patent/CA2516158A1/en
Application granted granted Critical
Publication of CA2516158C publication Critical patent/CA2516158C/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05FSYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
    • G05F5/00Systems 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
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02MAPPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M3/00Conversion of dc power input into dc power output
    • H02M3/22Conversion of dc power input into dc power output with intermediate conversion into ac
    • H02M3/24Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
    • H02M3/28Conversion 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
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02MAPPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00Details of apparatus for conversion
    • H02M1/0045Converters combining the concepts of switch-mode regulation and linear regulation, e.g. linear pre-regulator to switching converter, linear and switching converter in parallel, same converter or same transistor operating either in linear or switching mode

Abstract

Disclosed is an invention relating to a power supply for use in an apparatus for measuring electrical energy, comprising, in one embodiment, a first switching device, a device for storing electrical charge in electrical connection with the first switching device, a second switching device in electrical connection with the device for storing electrical charge, a first device for controlling the flow of current in electrical connection with the second switching device, and a third switching device in electrical connection with the first device for controlling the flow of current, wherein the first device for controlling the flow of current enables an input voltage to be applied to the second switching device when the input voltage is below a predetermined amount, and enables the input voltage to be applied to the second and third switching devices when the input voltage is above the predetermined amount.

Claims (27)

1. A power supply for use in an apparatus for measuring electrical energy, said electrical energy defining an input voltage, said power supply comprising:
a first switching device;
a device for storing electrical charge in electrical connection with the first switching device;
a second switching device in electrical connection with the device for storing electrical charge;
a first device for controlling the flow of current in electrical connection with the second switching device; and a third switching device in electrical connection with the first device for controlling the flow of current, wherein the first device for controlling the flow of current enables the input voltage to be applied to the second switching device when the input voltage is below a predetermined amount of input voltage, and enables the input voltage to be applied to the second and third switching devices when the input voltage is above the predetermined amount of input voltage.
2. The power supply of claim 1, further comprising a fourth switching device in electrical connection with the second switching device, wherein the input voltage is applied to the fourth switching device.
3. The power supply of claim 2, wherein each of the second and fourth switching devices comprises a MOSFET.
4. The power supply of claim 1, wherein the voltage stored in the device for storing electrical charge is less than a predetermined maximum amount of stored voltage.
5. The power supply of claim 4, wherein the maximum amount of stored voltage is approximately 320 volts.
6. The power supply of claim 1, wherein the voltage applied to the first switching device is less than a predetermined maximum amount of voltage.
7. The power supply of claim 6, wherein the maximum amount of voltage applied to the first switching device is substantially equal to the maximum amount of stored voltage.
8. The power supply of claim 1, wherein the predetermined amount of input voltage is 320 volts.
9. The power supply of claim 1, wherein the first device for controlling the flow of current comprises a zener diode.
10. The power supply of claim 1, wherein the third switching device comprises a MOSFET.
11. The power supply of claim 1, wherein the device for storing electrical charge comprises a capacitor.
12. The power supply of claim 1, wherein the input voltage is alternating current voltage of an amount between approximately 46 and 530 VAC.
13. The power supply of claim 1, wherein the first switching device comprises a Power Integrations, Inc., TOP 242 switch.
14. The power supply of claim 1, further comprising a second device for controlling the flow of current such that, when the input voltage is above said predetermined amount of input voltage and the voltage stored in the device for storing electrical charge is above a predetermined first amount of stored voltage, current ceases to flow through the second switching device.
15. The power supply of claim 14, wherein the first amount of stored voltage is approximately the minimum voltage necessary to support the first switching device.
16. The power supply of claim 14, wherein the first amount of stored voltage is approximately 120 volts.
17. The power supply of claim 1, further comprising:
an inductive device for generating electromotive force by inductance, wherein the inductive device is in electrical connection with the second switching device;

a third device for controlling the flow of electric current in electrical connection with the device for storing electrical charge;
a fifth switching device in electrical connection with the third device for controlling the flow of electric current; and a resistor in electrical connection with the inductive device, wherein the fifth switching device operates in linear mode when the voltage applied to the fifth switching device and to the inductive device is substantially equal to the voltage applied to the third device for controlling the flow of electric current, and wherein when the fifth switching device is in linear mode, the voltage applied to the inductive device decreases if the voltage applied to the resistor increases, and the voltage applied to the inductive device increases if the voltage applied to the resistor decreases.
18. The power supply of claim 17, wherein the fifth switching device is the same as the second switching device.
19. The power supply of claim 17, wherein the third device for controlling electric current is a zener diode.
20. A power supply for use in an apparatus for distributing electrical energy, said electrical energy defining an input voltage, said power supply comprising:
a transformer comprising first and second windings, wherein said input voltage is provided to said first winding so that current flows through said first winding, wherein said second winding defines the output of the power supply;
a first switching device in electrical connection with the first winding, for controlling the flow of current through the first winding;
a device for storing electrical charge in electrical connection with the first switching device;
a regulating device in electrical connection with the device for storing electrical charge, wherein the input voltage is applied to the regulating device, and the regulating device limits the input voltage applied to at least one of the device for storing electrical charge and the first switching device when the input voltage exceeds a predetermined amount.
21. The power supply of claim 20, wherein the regulating member comprises:

a second and a third switching device in electrical connection with the device for storing electrical charge;
a device for controlling the flow of electric current in electrical connection with the third switching device;
a fourth switching device in electrical connection with the device for controlling the flow of electric current, wherein the device for controlling the flow of electric current enables the input voltage to be applied to the second and third switching devices when the input voltage is below the predetermined amount of input voltage, and enables the input voltage to be applied to the second, third, and fourth switching devices when the input voltage is above the predetermined amount of input voltage.
22. An electrical power meter having electronic components, wherein the electrical power meter receives alternating current (AC) voltage from an electrical power line, said AC voltage defining an input voltage, the meter comprising:
a power supply comprising:
a first switching device, a device for storing electrical charge in electrical connection with the first switching device, a second switching device in electrical connection with the device for storing electrical charge, a first device for controlling the flow of current in electrical connection with the second switching device, and a third switching device in electrical connection with the first device for controlling the flow of current, wherein the first device for controlling the flow of current enables the input voltage to be applied to the second switching device when the input voltage is below a predetermined amount of input voltage, and enables the input voltage to be applied to the second and third switching devices when the input voltage is above the predetermined amount of input voltage.
23. The electrical power meter of claim 22, wherein the power supply further comprises:
an inductive device for generating electromotive force by inductance, wherein the inductive device is in electrical connection with the second switching device;

a second device for controlling the flow of electric current in electrical connection with the second switching device;
a resistor in electrical connection with the inductive device, wherein the second switching device operates in linear mode when the voltage applied to the second switching device and to the inductive device is substantially equal to the voltage applied to the second device for controlling the flow of electric current, and wherein when the second switching device is in linear mode, the voltage applied to the inductive device decreases if the voltage applied to the resistor increases, and the voltage applied to the inductive device increases if the voltage applied to the resistor decreases.
24. A method for limiting a wide range of input voltages applied to a device prior to applying the input voltage to one or more internal components of the device, the method comprising:
applying the input voltage to a first switching device when the input voltage is less than a predetermined amount such that the input voltage is applied to the internal components; and applying the input voltage to the first switching device and to a second switching device when the input voltage is more than the predetermined amount, such that the amount of voltage applied to the second switching device and the internal components is less than the predetermined amount, and the voltage that is applied to the first switching device is an amount substantially equal to the difference between the input voltage and the predetermined amount.
25. The method of claim 24, wherein the one or more internal components comprises at least one of a device that stores electrical charge and a third switching device.
26. A system for limiting a rate of change of current in a device, comprising:
an inductive device for generating electromotive force by inductance;
a switching device in electrical connection with the inductive device;
a device for controlling the flow of electric current in electrical connection with the switching device; and a resistor in electrical connection with the switching device, wherein the switching device operates in linear mode when the voltage applied to the switching device and to the inductive device is substantially equal to the voltage applied to the device for controlling the flow of electric current, and wherein when the switching device is in linear mode, the voltage applied to the inductive device decreases if the voltage applied to the resistor increases, and the voltage applied to the inductive device increases if the voltage applied to the resistor decreases.
27. The system of claim 26, wherein the operating characteristics of the inductive device, the resistor, the switching device, and the device for controlling the flow of electric current are such that electromagnetic interference caused by the increase or decrease of current in the system is reduced.
CA2516158A 2004-08-17 2005-08-17 High voltage regulator for an electric meter power supply Expired - Fee Related CA2516158C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10/919,645 2004-08-17
US10/919,645 US7355867B2 (en) 2004-08-17 2004-08-17 Power supply for an electric meter having a high-voltage regulator that limits the voltage applied to certain components below the normal operating input voltage

Publications (2)

Publication Number Publication Date
CA2516158A1 true CA2516158A1 (en) 2006-02-17
CA2516158C CA2516158C (en) 2011-04-12

Family

ID=35852105

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2516158A Expired - Fee Related CA2516158C (en) 2004-08-17 2005-08-17 High voltage regulator for an electric meter power supply

Country Status (3)

Country Link
US (1) US7355867B2 (en)
CA (1) CA2516158C (en)
MX (1) MXPA05008792A (en)

Families Citing this family (35)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7489120B2 (en) * 2006-07-12 2009-02-10 Power Integrations, Inc. Method and apparatus for a high voltage power supply circuit
US8312103B2 (en) 2006-08-31 2012-11-13 Itron, Inc. Periodic balanced communication node and server assignment
US7847536B2 (en) 2006-08-31 2010-12-07 Itron, Inc. Hall sensor with temperature drift control
US8024724B2 (en) 2006-08-31 2011-09-20 Itron, Inc. Firmware download
US8049642B2 (en) * 2006-09-05 2011-11-01 Itron, Inc. Load side voltage sensing for AMI metrology
US8787210B2 (en) 2006-09-15 2014-07-22 Itron, Inc. Firmware download with adaptive lost packet recovery
US8055461B2 (en) 2006-09-15 2011-11-08 Itron, Inc. Distributing metering responses for load balancing an AMR network
US9354083B2 (en) 2006-09-15 2016-05-31 Itron, Inc. Home area networking (HAN) with low power considerations for battery devices
US8059011B2 (en) 2006-09-15 2011-11-15 Itron, Inc. Outage notification system
US8138944B2 (en) 2006-09-15 2012-03-20 Itron, Inc. Home area networking (HAN) with handheld for diagnostics
US7843391B2 (en) 2006-09-15 2010-11-30 Itron, Inc. RF local area network antenna design
US8212687B2 (en) 2006-09-15 2012-07-03 Itron, Inc. Load side voltage sensing for AMI metrology
US8384558B2 (en) 2006-10-19 2013-02-26 Itron, Inc. Extending contact life in remote disconnect applications
US9349528B2 (en) * 2007-06-01 2016-05-24 Landis+Gyr, Inc. Power supply arrangement having a boost circuit for an electricity meter
CN101769948B (en) * 2009-01-05 2012-02-29 金宝电子(中国)有限公司 Power supply device of test equipment
KR101353005B1 (en) 2009-05-07 2014-01-21 버지니아 일렉트릭 앤드 파워 컴퍼니 Voltage conservation using advanced metering infrastructure and substation centralized voltage control
JP5316902B2 (en) 2010-11-05 2013-10-16 ブラザー工業株式会社 Power supply system and image forming apparatus
DK177225B1 (en) * 2010-12-01 2012-07-23 Hydria Elektronik Aps AC / DC Power Supply with Phase Cut Circuit
US10200476B2 (en) 2011-10-18 2019-02-05 Itron, Inc. Traffic management and remote configuration in a gateway-based network
US9419888B2 (en) 2011-12-22 2016-08-16 Itron, Inc. Cell router failure detection in a mesh network
CN102520241B (en) * 2011-12-26 2014-07-02 武汉盛帆电子股份有限公司 Three-phase charge-controlled electric energy meter based on resistance-capacitance voltage reduction and low-voltage direct-current/direct-current (DC/DC) power supply
JP6040768B2 (en) * 2012-12-28 2016-12-07 ブラザー工業株式会社 Switching power supply, power supply system, and image forming apparatus
US9385587B2 (en) * 2013-03-14 2016-07-05 Sandisk Technologies Llc Controlled start-up of a linear voltage regulator where input supply voltage is higher than device operational voltage
US9847639B2 (en) 2013-03-15 2017-12-19 Dominion Energy, Inc. Electric power system control with measurement of energy demand and energy efficiency
US9563218B2 (en) 2013-03-15 2017-02-07 Dominion Resources, Inc. Electric power system control with measurement of energy demand and energy efficiency using t-distributions
US9553453B2 (en) 2013-03-15 2017-01-24 Dominion Resources, Inc. Management of energy demand and energy efficiency savings from voltage optimization on electric power systems using AMI-based data analysis
US9582020B2 (en) 2013-03-15 2017-02-28 Dominion Resources, Inc. Maximizing of energy delivery system compatibility with voltage optimization using AMI-based data control and analysis
US9678520B2 (en) 2013-03-15 2017-06-13 Dominion Resources, Inc. Electric power system control with planning of energy demand and energy efficiency using AMI-based data analysis
JP6364894B2 (en) 2014-04-01 2018-08-01 ブラザー工業株式会社 Power supply system and image forming apparatus
US10732656B2 (en) 2015-08-24 2020-08-04 Dominion Energy, Inc. Systems and methods for stabilizer control
FR3056346B1 (en) * 2016-09-20 2018-10-19 Commissariat A L'energie Atomique Et Aux Energies Alternatives CURRENT LIMITER FOR ALTERNATIVE CURRENT LOAD
US10063151B2 (en) 2016-11-02 2018-08-28 Progress Rall Locomotive Inc. Surge tolerant power supply system for providing operating power to appliances
US10833799B2 (en) 2018-05-31 2020-11-10 Itron Global Sarl Message correction and dynamic correction adjustment for communication systems
WO2020163367A1 (en) * 2019-02-04 2020-08-13 Sentient Energy, Inc. Power supply for electric utility underground equipment
CN110828176B (en) * 2019-11-27 2022-01-07 东佳电子(郴州)有限公司 Pulse capacitor for fast discharge unit

Family Cites Families (141)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2724821A (en) 1954-07-19 1955-11-22 Schweitzer Mfg Co E Remote measuring system
US3569818A (en) * 1969-07-22 1971-03-09 Hughes Aircraft Co Multiple output dc voltage regulator
FR2137239B2 (en) 1970-10-26 1976-04-09 Schlumberger Compteurs
US3826985A (en) 1971-06-04 1974-07-30 Motorola Inc Self-powered tachometer circuit
US3794917A (en) 1972-03-09 1974-02-26 Esterline Corp Electronic watt transducer
CA1033393A (en) 1974-06-05 1978-06-20 Georges Le Couturier Thermoelectric heat pump
US3976941A (en) 1974-09-13 1976-08-24 General Electric Company Auto-ranging system for an electronic energy meter
US4158810A (en) * 1974-10-21 1979-06-19 Leskovar Silvin M Telemetering post for measuring variables in a high-voltage overhead line
US4034292A (en) 1976-02-18 1977-07-05 Westinghouse Electric Corporation Direction sensitive opto-electronic pulse initiator for electrical meters
US4119948A (en) 1976-04-29 1978-10-10 Ernest Michael Ward Remote meter reading system
US4213119A (en) * 1976-04-29 1980-07-15 Energy Optics, Inc. Remote meter reading system providing demand readings and load control from conventional KWH meters
US4120031A (en) 1976-07-19 1978-10-10 Energy Conservation Systems, Inc. Utility usage monitoring systems
US4156273A (en) * 1976-10-07 1979-05-22 Sanyo Electric Co., Ltd. Protection of a switching regulator
US4092592A (en) 1977-01-07 1978-05-30 General Electric Company Electronic kWh meter having virtual ground isolation
US4077061A (en) 1977-03-25 1978-02-28 Westinghouse Electric Corporation Digital processing and calculating AC electric energy metering system
NL183424B (en) 1977-05-16 Enertec ELECTRONIC ENERGY METER.
US4131844A (en) 1977-05-19 1978-12-26 Sundstrand Corporation Static voltage balancer
US4096436A (en) 1977-05-23 1978-06-20 The Valeron Corporation Power monitor
US4156932A (en) * 1977-07-05 1979-05-29 Honeywell Information Systems Inc. Programmable communications controller
US4186339A (en) * 1978-01-20 1980-01-29 Curtis Instruments, Inc. Method and apparatus for measuring current, especially useful in multi-ampere systems
US4298839A (en) 1978-03-31 1981-11-03 Westinghouse Electric Corp. Programmable AC electric energy meter having radiation responsive external data interface
US4156931A (en) * 1978-05-25 1979-05-29 Digital Equipment Corporation Digital data communications device with standard option connection
US4209826A (en) * 1978-06-14 1980-06-24 Coilcraft, Inc. Regulated switching mode power supply
US4415853A (en) 1978-09-08 1983-11-15 Fisher Berish M Monitoring device and method for accurately determining and recording present demand of electrical energy
US4241237A (en) 1979-01-26 1980-12-23 Metretek Incorporated Apparatus and method for remote sensor monitoring, metering and control
US4455453A (en) * 1979-01-26 1984-06-19 Metretek, Incorporated Apparatus and method for remote sensor monitoring, metering and control
US4335445A (en) * 1979-02-26 1982-06-15 Kepco, Inc. System for interfacing computers with programmable power supplies
US4301508A (en) 1979-03-28 1981-11-17 Eaton Corp. Digital processing system for time-of-day and demand meter display
US4291375A (en) * 1979-03-30 1981-09-22 Westinghouse Electric Corp. Portable programmer-reader unit for programmable time registering electric energy meters
US4283772A (en) * 1979-03-30 1981-08-11 Westinghouse Electric Corp. Programmable time registering AC electric energy meter having electronic accumulators and display
US4399510A (en) * 1979-04-03 1983-08-16 Nuclear Systems, Inc. System for monitoring utility usage
DE2938238A1 (en) * 1979-09-21 1981-04-09 Siemens AG, 1000 Berlin und 8000 München ELECTRONIC THREE-PHASE ELECTRICITY METER FOR THE CAPACITOR TRANSFER METHOD
US4335447A (en) * 1980-02-05 1982-06-15 Sangamo Weston, Inc. Power outage recovery method and apparatus for demand recorder with solid state memory
US4361877A (en) 1980-02-05 1982-11-30 Sangamo Weston, Inc. Billing recorder with non-volatile solid state memory
US4355361A (en) 1980-02-06 1982-10-19 Sangamo Weston, Inc. Data processor apparatus for multitariff meter
DE3165143D1 (en) 1980-02-07 1984-09-06 Schlumberger Electronics Uk Electricity meters
US4315248A (en) * 1980-02-21 1982-02-09 Energy Optics, Inc. Load control system for standard electric utility meter
US4389702A (en) * 1980-08-20 1983-06-21 International Rectifier Corporation Switching power supply circuit having constant output for a wide range of input voltage
US4437059A (en) * 1980-10-21 1984-03-13 Rochester Instrument Systems, Inc. Wattmeter
US4439764A (en) * 1981-04-09 1984-03-27 Westinghouse Electric Corp. Dual mode meter reading apparatus
US4422039A (en) 1981-04-24 1983-12-20 Brown Boveri Electric Inc. Self-powered ammeter
US4757456A (en) * 1981-05-19 1988-07-12 Ralph Benghiat Device and method for utility meter reading
US4407061A (en) 1981-06-04 1983-10-04 Bell Telephone Laboratories, Incorporated Fabrication procedure using arsenate glasses
US4467434A (en) * 1981-09-18 1984-08-21 Mcgraw-Edison Co. Solid state watt-hour meter
US4438485A (en) * 1981-12-21 1984-03-20 Voigt William C Efficiency switching-mode power supply
US4516213A (en) * 1982-02-01 1985-05-07 E. Grant Deans Multiple rate metering system
US4794369A (en) 1982-02-25 1988-12-27 Scientific Columbus, Inc. Multi-function electricity metering transducer
US4489384A (en) 1982-03-01 1984-12-18 Mcgraw-Edison Company Electro-optical sensor for watt-hour meter
US4509128A (en) * 1982-04-16 1985-04-02 Sangamo Weston, Inc. Solid-state electrical-power demand register and method
US4542469A (en) * 1982-08-12 1985-09-17 Duncan Electric Company, Inc. Programmable demand register with two way communication through an optical port and external reading devices associated therewith
CA1199062A (en) * 1982-09-06 1986-01-07 Gerben S. Hoeksma Dc-to-ac voltage converter having galvanically separated input and output(s)
JPS59139858A (en) * 1983-01-26 1984-08-10 Canon Inc Power source
US4581705A (en) * 1983-01-28 1986-04-08 Cooper Industries, Inc. Method and machine for metering electric parameters
US4600881A (en) * 1983-04-06 1986-07-15 Pennsylvania Power And Light Company Watthour test circuitry
US4497017A (en) * 1983-05-16 1985-01-29 National Semiconductor Corporation Switching regulator off-line starting circuit
JPS60104267A (en) 1983-11-11 1985-06-08 Toshiba Corp Electric energy measuring device
US4622627A (en) 1984-02-16 1986-11-11 Theta-J Corporation Switching electrical power supply utilizing miniature inductors integrally in a PCB
US4621330A (en) 1984-02-28 1986-11-04 Westinghouse Electric Corp. Programming system for programmable time registering electric energy meters
US4620150A (en) 1984-04-12 1986-10-28 General Electric Company Electric meter with electronic rolling demand register
US4642634A (en) * 1984-09-18 1987-02-10 Ncr Corporation Optical encoder
US4623960A (en) 1984-10-15 1986-11-18 At&T Bell Laboratories Bias power source energized by tertiary winding including hysteresis characteristic for disabling the power switch when a minimum base drive signal can no longer be maintained
GB8426822D0 (en) * 1984-10-23 1984-11-28 Day S Static electricity meter
EP0204723B1 (en) * 1984-10-24 1991-05-08 Om Ahuja Auto-reset circuit breaker
US4701858A (en) 1984-12-31 1987-10-20 Energy Optics Inc. Nonvolatile realtime clock calendar module
US4700280A (en) 1985-04-19 1987-10-13 Hitachi, Ltd. Switching power supply using a saturable reactor to control a switching element
US4646084A (en) * 1985-06-21 1987-02-24 Energy Innovations, Inc. Meter reading methods and apparatus
US4881070A (en) 1985-06-21 1989-11-14 Energy Innovations, Inc. Meter reading methods and apparatus
US4754219A (en) * 1985-09-09 1988-06-28 General Electric Company Low cost self-contained transformerless solid state electronic watthour meter having thin film ferromagnetic current sensor
US4697181A (en) 1985-09-16 1987-09-29 Sangamo Weston, Inc. System for accumulating verifiable energy demand data from remote electricity meters
US4697182A (en) 1985-09-16 1987-09-29 Sangamo Weston, Inc. Method of and system for accumulating verifiable energy demand data from remote electricity meters
US4639728A (en) * 1985-09-16 1987-01-27 Sangamo Weston, Inc. Method of and system for accumulating verifiable energy demand data from remote electricity meters
US4697180A (en) 1985-09-16 1987-09-29 Sangamo Weston, Inc. System for accumulating verifiable energy demand data from remote electricity meters
US4682169A (en) * 1985-09-16 1987-07-21 Sangamo Weston, Inc. Method of and system for accumulating verifiable energy demand data from remote electricity meters
US4804957A (en) * 1985-11-27 1989-02-14 Triad Communications, Inc. Utility meter and submetering system
US4978911A (en) 1986-02-06 1990-12-18 Oliver J. Nilsen (Australia) Limited Electrical energy analyzer
US4713608A (en) 1986-03-06 1987-12-15 Computer Power Systems Corporation Apparatus for providing cost efficient power measurement
US4686460A (en) * 1986-04-11 1987-08-11 Sangamo Weston, Inc. Solid state electricity meter display
US4803632A (en) * 1986-05-09 1989-02-07 Utility Systems Corporation Intelligent utility meter system
GB8614620D0 (en) * 1986-06-16 1986-07-23 Schlumberger Electronics Uk Commodity metering systems
US4761725A (en) * 1986-08-01 1988-08-02 Unisys Corporation Digitally controlled A.C. to D.C. power conditioner
US4922187A (en) * 1987-02-13 1990-05-01 Appalachian Technologies Corporation Pulse initiator circuit
JPS63138881U (en) 1987-02-27 1988-09-13
US4884021A (en) 1987-04-24 1989-11-28 Transdata, Inc. Digital power metering
US4831327A (en) * 1987-05-01 1989-05-16 Hydro-Quebec Self-powered electrical measuring system isolated from electrical perturbances
US4814757A (en) * 1987-06-11 1989-03-21 Ametek, Inc. Electrical, scrolling digit display
US4902965A (en) * 1987-06-15 1990-02-20 Bodrug John D Consumption meter for accumulating digital power consumption signals via telephone lines without disturbing the consumer
CH677036A5 (en) * 1987-08-06 1991-03-28 Landis & Gyr Betriebs Ag
CH677037A5 (en) 1987-08-06 1991-03-28 Landis & Gyr Betriebs Ag
US4998061A (en) * 1987-09-21 1991-03-05 Landis & Gyr Metering, Inc. Watthour meter with temperature compensation for wye connected systems
US4902964A (en) * 1987-09-21 1990-02-20 Landis & Gyr Metering, Inc. Program clock for an electronic demand register with automatic calibration based on sensed line frequency
US4896106A (en) * 1987-09-21 1990-01-23 Landis & Gyr Metering, Inc. Watthour meter for wye connected systems
US4862493A (en) * 1987-12-28 1989-08-29 General Electric Company Electronic remote data recorder for electric energy metering
JPH01227658A (en) * 1988-03-07 1989-09-11 Nec Corp Power supply circuit
DE3808863A1 (en) 1988-03-17 1989-09-28 Philips Patentverwaltung POWER SUPPLY ARRANGEMENT
US5014213A (en) * 1988-04-20 1991-05-07 Domestic Automation Company, Inc. System for use with polyphase utility meters for recording time of energy use
US4977368A (en) 1988-04-26 1990-12-11 Abb Power T&D Company Electric utility meter with electronic register
US4949029A (en) * 1988-07-15 1990-08-14 Schulmberger Industries, Inc. Adjustment circuit and method for solid-state electricity meter
US4908569A (en) * 1988-08-09 1990-03-13 Fest Otto P Transformerless line powdered digital AC voltmeter
US4999572A (en) * 1988-09-19 1991-03-12 General Electric Company Redundant pulse monitoring in electric energy metering system
US5010335A (en) * 1988-11-29 1991-04-23 Schlumberger Industries, Inc. Optical port multiplexer for electric metering equipment
US5017860A (en) * 1988-12-02 1991-05-21 General Electric Company Electronic meter digital phase compensation
US4866587A (en) 1988-12-22 1989-09-12 American Telephone And Telegraph Company At&T Bell Laboratories Electronic ringing signal generator
NL8900609A (en) * 1989-03-14 1990-10-01 Nedap Nv STEERING SWITCH.
CH681491A5 (en) * 1989-03-31 1993-03-31 Landis & Gyr Business Support
US4951052A (en) * 1989-07-10 1990-08-21 General Electric Company Correction of systematic error in an oversampled analog-to-digital converter
US4999569A (en) * 1989-09-01 1991-03-12 Abb Power T&D Company Method to calibrate magneto-optic based metering system
US5049810A (en) * 1989-09-22 1991-09-17 Landis & Gyr Metering, Inc. Watt-hour meter cover with battery hatch reset switch and optical communication port
CA2021078A1 (en) * 1989-09-25 1991-03-26 Warren Ralph Germer Electronic watthour meter
US5059896A (en) * 1989-09-25 1991-10-22 General Electric Company Electronic watthour meter
US5181026A (en) * 1990-01-12 1993-01-19 Granville Group, Inc., The Power transmission line monitoring system
KR920005724Y1 (en) * 1990-05-11 1992-08-20 삼성전자 주식회사 Circuit for switching mode power supply
US5122735A (en) * 1990-06-14 1992-06-16 Transdata, Inc. Digital power metering
US5287287A (en) * 1990-09-14 1994-02-15 Energy Audit Corporation Power consumption rate display device
US5237511A (en) * 1990-10-29 1993-08-17 Westronic, Inc. Distribution automation smart remote terminal unit
US5184064A (en) * 1991-03-25 1993-02-02 Stewart & Stevenson Services, Inc. Encapsulated meter with optical programmer
US5229713A (en) * 1991-04-25 1993-07-20 General Electric Company Method for determining electrical energy consumption
US5291384A (en) * 1991-06-20 1994-03-01 Unitrode Corporation Phase shifted switching controller
GB9120004D0 (en) * 1991-09-19 1991-11-06 Ampy Automation Digilog Improvements relating to the calibration of power meters
US5155670A (en) * 1991-09-24 1992-10-13 Brian Matley J Bootstrap modified topologies for wide-input range switchmode DC to DC converters
US5391983A (en) * 1991-10-08 1995-02-21 K C Corp. Solid state electric power usage meter and method for determining power usage
US5191338A (en) * 1991-11-29 1993-03-02 General Electric Company Wideband transmission-mode FET linearizer
US5315527A (en) * 1992-01-03 1994-05-24 Beckwith Robert W Method and apparatus providing half-cycle digitization of AC signals by an analog-to-digital converter
MX9206230A (en) * 1992-02-21 1993-09-01 Abb Power T & D Co IMPROVEMENTS IN AN ELECTRICAL ACTIVITY METER AND METHODS FOR THE USE OF THE SAME.
US5537029A (en) * 1992-02-21 1996-07-16 Abb Power T&D Company Inc. Method and apparatus for electronic meter testing
US5457621A (en) * 1992-02-21 1995-10-10 Abb Power T&D Company Inc. Switching power supply having voltage blocking clamp
US5631554A (en) * 1993-03-26 1997-05-20 Schlumberger Industries, Inc. Electronic metering device including automatic service sensing
US5495167A (en) * 1994-07-12 1996-02-27 General Electric Company Electrical energy meter having record of meter calibration data therein and method of recording calibration data
US5615097A (en) * 1994-09-20 1997-03-25 Astec International, Ltd. Transient over voltage protection circuit for electrical power converters
US5602724A (en) * 1996-04-23 1997-02-11 Power Integrations, Inc. Low-cost, high-voltage, flyback power supply
US5742151A (en) * 1996-06-20 1998-04-21 Micro Linear Corporation Input current shaping technique and low pin count for pfc-pwm boost converter
US6201374B1 (en) * 1998-05-14 2001-03-13 3Com Corporation Voltage regulation and power switching system
US6169391B1 (en) * 1999-07-12 2001-01-02 Supertex, Inc. Device for converting high voltage alternating current to low voltage direct current
US6462971B1 (en) * 1999-09-24 2002-10-08 Power Integrations, Inc. Method and apparatus providing a multi-function terminal for a power supply controller
JP3341832B2 (en) * 1999-12-27 2002-11-05 日本電気株式会社 Power supply circuit and smoothing method
JP3475892B2 (en) * 2000-02-25 2003-12-10 株式会社村田製作所 Switching power supply
US6377033B2 (en) * 2000-08-07 2002-04-23 Asustek Computer Inc. Linear regulator capable of sinking current
US6473284B1 (en) * 2000-09-06 2002-10-29 General Electric Company Low-power dc-to-dc converter having high overvoltage protection
ATE381141T1 (en) * 2001-02-01 2007-12-15 Power One Inc ISOLATED DRIVER CIRCUIT ARRANGEMENT FOR USE IN POWER SWITCHING REGULATORS
AU2003207377A1 (en) * 2002-02-26 2003-09-09 Philips Intellectual Property And Standards Gmbh Method of operating a switched-mode power supply and switched-mode power supply
US6809678B2 (en) * 2002-10-16 2004-10-26 Perkinelmer Inc. Data processor controlled DC to DC converter system and method of operation
US6804127B2 (en) * 2002-11-19 2004-10-12 Wilcon Inc. Reduced capacitance AC/DC/AC power converter

Also Published As

Publication number Publication date
MXPA05008792A (en) 2006-05-25
CA2516158C (en) 2011-04-12
US7355867B2 (en) 2008-04-08
US20060038548A1 (en) 2006-02-23

Similar Documents

Publication Publication Date Title
CA2516158A1 (en) High voltage regulator for an electric meter power supply
CN110402535B (en) High efficiency AC-to-DC extraction converter and method
JP5357144B2 (en) Input-regulated DC-DC converter for collecting power
JP5253304B2 (en) Circuit and method for responding to a current derived from a voltage across the input of an energy transfer element
CA2690050C (en) Bidirectional dc to dc converter for power storage control in a power scavenging application
CA2620958A1 (en) Power supply for a load control device
EP2390750A1 (en) Automatic voltage regulator and toroidal transformer
US10483804B2 (en) Monotonic wireless power transfer
JP2009542189A5 (en)
US9306461B2 (en) LED driver with small output ripple without requiring a high-voltage primary-side electrolytic capacitor
JP2017221101A5 (en)
CN102761272A (en) A power circuit and a leakage circuit-breaker employing the same
WO2012009261A2 (en) Reset voltage circuit for a forward power converter
EP2665340B1 (en) LED driver circuits and methods
KR101925182B1 (en) Inductive Power Supply based on Current Transformer
US20100220507A1 (en) Microcontroller operated current limited switching power supply for circuit protective devices
JP2007511995A (en) Switch mode power supply
KR101748726B1 (en) Constant voltage supplying circuit for circuit breaker
KR101048659B1 (en) Auto voltage regulator for charge
WO2009134016A3 (en) Automatic voltage regulator
MX2008000943A (en) Ac-to-dc electrical switching circuit.
KR101883326B1 (en) Precise control power saver using inductive voltage control
RU2554712C1 (en) Stabilising ac voltage regulator
RU74748U1 (en) HIGH PRECISION ELECTRONIC AC VOLTAGE REGULATOR
US11444531B2 (en) Voltage converter

Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed

Effective date: 20180817