NO955012L - Switching circuit - Google Patents

Switching circuit

Info

Publication number
NO955012L
NO955012L NO955012A NO955012A NO955012L NO 955012 L NO955012 L NO 955012L NO 955012 A NO955012 A NO 955012A NO 955012 A NO955012 A NO 955012A NO 955012 L NO955012 L NO 955012L
Authority
NO
Norway
Prior art keywords
circuit
switching circuit
voltage
autotransformer
resistor
Prior art date
Application number
NO955012A
Other languages
Norwegian (no)
Other versions
NO955012D0 (en
Inventor
David Leslie Lloyd Peach
Original Assignee
Southpower Ltd
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 Southpower Ltd filed Critical Southpower Ltd
Publication of NO955012D0 publication Critical patent/NO955012D0/en
Publication of NO955012L publication Critical patent/NO955012L/en

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS 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
    • H02M5/00—Conversion of AC power input into AC power output, e.g. for change of voltage, for change of frequency, for change of number of phases
    • H02M5/02—Conversion of AC power input into AC power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into DC
    • H02M5/04—Conversion of AC power input into AC power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into DC by static converters
    • H02M5/22—Conversion of AC power input into AC power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into DC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M5/275—Conversion of AC power input into AC power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into DC 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
    • H02M5/293—Conversion of AC power input into AC power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into DC 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
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
    • G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
    • G05F1/10—Regulating voltage or current 
    • G05F1/625—Regulating voltage or current  wherein it is irrelevant whether the variable actually regulated is AC or DC
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P13/00—Arrangements for controlling transformers, reactors or choke coils, for the purpose of obtaining a desired output
    • H02P13/06—Arrangements for controlling transformers, reactors or choke coils, for the purpose of obtaining a desired output by tap-changing; by rearranging interconnections of windings
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
    • H05B41/14—Circuit arrangements
    • H05B41/36—Controlling
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
    • H05B41/14—Circuit arrangements
    • H05B41/36—Controlling
    • H05B41/38—Controlling the intensity of light
    • H05B41/40—Controlling the intensity of light discontinuously
    • H05B41/42—Controlling the intensity of light discontinuously in two steps only

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Automation & Control Theory (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Physics & Mathematics (AREA)
  • Dc-Dc Converters (AREA)
  • Ac-Ac Conversion (AREA)
  • Rectifiers (AREA)
  • Amplifiers (AREA)
  • Noise Elimination (AREA)
  • Oscillators With Electromechanical Resonators (AREA)

Abstract

Svitsjkrets for bruk ved en autotransformator for glatt overgang av spenningsutgangen fra en krets av enten likestrøm- eller vekselstrømtypen mellom en høyrere og lavere spenning. Kretsen innbefatter i det minste en, fortrinnsvis to variable resistorer (13) innbefattende en første halvledersvitsj (10), en induktor (11) og en resistor (12), hvor den variable resistoren (13) er forbundet med ledesiden til svitsjen og hvor kretsen er forbundet med spenningsutgangen til en autotransformator. Dersom de anvendte halvledersvitsjene er felteffekttransistorer er den variable resistoren (13) anbrakt innenfor en brolikeretter (D2-D5). Overgangstiden for bevegelse av spenningen mellom to nivåer er tilnærmet ett sekund.Switching circuit for use with an autotransformer for smooth transition of voltage output from a circuit of either DC or AC type between a higher and lower voltage. The circuit includes at least one, preferably two variable resistors (13) including a first semiconductor switch (10), an inductor (11) and a resistor (12), wherein the variable resistor (13) is connected to the lead side of the switch and the circuit is connected to the voltage output of an autotransformer. If the semiconductor switches used are field power transistors, the variable resistor (13) is located within a bridge rectifier (D2-D5). The transition time for moving the voltage between two levels is approximately one second.

NO955012A 1993-06-17 1995-12-11 Switching circuit NO955012L (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NZ247913A NZ247913A (en) 1993-06-17 1993-06-17 Softly switched voltage output circuit with autotransformer
PCT/NZ1994/000060 WO1995001084A1 (en) 1993-06-17 1994-06-14 Soft switching circuitry

Publications (2)

Publication Number Publication Date
NO955012D0 NO955012D0 (en) 1995-12-11
NO955012L true NO955012L (en) 1995-12-11

Family

ID=19924387

Family Applications (1)

Application Number Title Priority Date Filing Date
NO955012A NO955012L (en) 1993-06-17 1995-12-11 Switching circuit

Country Status (10)

Country Link
EP (1) EP0704144A4 (en)
AU (1) AU673612B2 (en)
CA (1) CA2164819C (en)
FI (1) FI956017A0 (en)
IL (1) IL109986A (en)
IN (1) IN184266B (en)
NO (1) NO955012L (en)
NZ (1) NZ247913A (en)
WO (1) WO1995001084A1 (en)
ZA (1) ZA944282B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITRM20040371A1 (en) * 2004-07-21 2004-10-21 Seko Italia S P A DRIVING DEVICE FOR AN ELECTROMAGNET, IN PARTICULAR FOR THE OPERATION OF PUMPS.

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3283234A (en) * 1964-01-10 1966-11-01 Gen Electric Control for reversible motor with instantaneous current limit
US3921035A (en) * 1974-01-15 1975-11-18 Esquire Inc Solid state switching circuit
US4201938A (en) * 1978-10-02 1980-05-06 Siemens-Allis, Inc. Voltage regulator which eliminates arcing during tap changes
CH650888A5 (en) * 1980-03-25 1985-08-15 Rudolf Muehling Power changeover device for gas-discharge lamps
US4513224A (en) * 1982-09-22 1985-04-23 Pacific Power Control, Inc. Fluorescent-lighting-system voltage controller
US4701645A (en) * 1985-01-24 1987-10-20 Cox & Company, Inc. Switching circuit with low conducted electromagnetic interference characteristics
US4736268A (en) * 1986-12-18 1988-04-05 Westinghouse Electric Corp. High frequency AC solid state switch
US5047694A (en) * 1989-06-30 1991-09-10 Hubbell Incorporated Lamp starting circuit
GB2242587B (en) * 1990-02-01 1994-05-25 Mole Valley Systems Ltd Power control circuit for reactive loads

Also Published As

Publication number Publication date
AU673612B2 (en) 1996-11-14
FI956017A7 (en) 1995-12-14
CA2164819A1 (en) 1995-01-05
IL109986A0 (en) 1994-10-07
IN184266B (en) 2000-07-22
NO955012D0 (en) 1995-12-11
FI956017L (en) 1995-12-14
EP0704144A4 (en) 1996-12-04
AU7009794A (en) 1995-01-17
IL109986A (en) 1999-04-11
ZA944282B (en) 1995-02-10
EP0704144A1 (en) 1996-04-03
CA2164819C (en) 1998-11-10
NZ247913A (en) 1996-07-26
WO1995001084A1 (en) 1995-01-05
FI956017A0 (en) 1995-12-14

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