GB1483896A - Supplying power from a source of alternating voltage to a load - Google Patents

Supplying power from a source of alternating voltage to a load

Info

Publication number
GB1483896A
GB1483896A GB5458673A GB5458673A GB1483896A GB 1483896 A GB1483896 A GB 1483896A GB 5458673 A GB5458673 A GB 5458673A GB 5458673 A GB5458673 A GB 5458673A GB 1483896 A GB1483896 A GB 1483896A
Authority
GB
United Kingdom
Prior art keywords
load
transistor
source
oscillator
supply
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.)
Expired
Application number
GB5458673A
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.)
Electrothermal Engineering Ltd
Original Assignee
Electrothermal Engineering 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 Electrothermal Engineering Ltd filed Critical Electrothermal Engineering Ltd
Priority to GB5458673A priority Critical patent/GB1483896A/en
Publication of GB1483896A publication Critical patent/GB1483896A/en
Expired legal-status Critical Current

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
    • H02M5/25—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 thyratron or thyristor type requiring extinguishing means
    • H02M5/257—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 thyratron or thyristor type requiring extinguishing means using semiconductor devices only
    • H02M5/2573—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 thyratron or thyristor type requiring extinguishing means using semiconductor devices only with control circuit

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Power Conversion In General (AREA)

Abstract

1483896 Control of A.C. power to a load ELECTROTHERMAL ENG Ltd 20 Jan 1975 [23 Nov 1973] 54586/73 Heading H2H [Also in Division H3] A circuit for supplying and controlling power from an A.C. source to a load is arranged so that switching on of a controlled switch 1L series between the source and to the load can only occur at or near the zero crossings of the supply waveform, and also that a further input may be applied to prevent control signals from reaching the controlled switch. As shown, A.C. is supplied at 3 and may pass through triac T1 to load 6. A rectifier comprising diodes D1, D2, capacitors C1, C2 and zener diode Z1 is connected across the source 3 to supply power to an oscillator comprising operational amplifier IC1, capacitor C4 and resistors R1- R4. The mark/space ratio of the oscillator is variable by means of potentiometer 10 and the output is applied to gating transistor TR2 and thence to the trigger of triac T1 via resistor R6. The period of the oscillator is in the order of 1 second. A voltage detector comprises a bridge rectifier D6-D9 with transistor TR1 connected across a diagonal. This transistor is off only near zero-crossovers of the supply 3 and transistor TR2 is only enabled to pass the oscillator output during this period. The gating transistor TR2 may be inhibited also by a signal on the line 7 via diode D10.
GB5458673A 1973-11-23 1973-11-23 Supplying power from a source of alternating voltage to a load Expired GB1483896A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB5458673A GB1483896A (en) 1973-11-23 1973-11-23 Supplying power from a source of alternating voltage to a load

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5458673A GB1483896A (en) 1973-11-23 1973-11-23 Supplying power from a source of alternating voltage to a load

Publications (1)

Publication Number Publication Date
GB1483896A true GB1483896A (en) 1977-08-24

Family

ID=10471492

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5458673A Expired GB1483896A (en) 1973-11-23 1973-11-23 Supplying power from a source of alternating voltage to a load

Country Status (1)

Country Link
GB (1) GB1483896A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2126437A (en) * 1982-08-27 1984-03-21 Electronic Manufacturing Limit Semiconductor switching circuit
FR2537802A1 (en) * 1982-12-09 1984-06-15 Trw Canada Ltd ELECTRONIC CONTINUOUS HEATING CONTROL DEVICE
US4544899A (en) * 1982-09-20 1985-10-01 Brydor Limited Controlled power line filters for suppressing interference
WO2006114295A2 (en) * 2005-04-27 2006-11-02 Kurz, Gerhard Phase control

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2126437A (en) * 1982-08-27 1984-03-21 Electronic Manufacturing Limit Semiconductor switching circuit
US4544899A (en) * 1982-09-20 1985-10-01 Brydor Limited Controlled power line filters for suppressing interference
FR2537802A1 (en) * 1982-12-09 1984-06-15 Trw Canada Ltd ELECTRONIC CONTINUOUS HEATING CONTROL DEVICE
GB2133643A (en) * 1982-12-09 1984-07-25 Trw Canada Ltd Power controller
WO2006114295A2 (en) * 2005-04-27 2006-11-02 Kurz, Gerhard Phase control
WO2006114295A3 (en) * 2005-04-27 2007-03-15 Kurz Gerhard Phase control
AU2006239493B2 (en) * 2005-04-27 2010-01-28 Kurz, Gerhard Phase control
CN101171738B (en) * 2005-04-27 2012-03-28 格哈德·库尔策 Control device

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee