GB1316829A - Power supply arrangements - Google Patents

Power supply arrangements

Info

Publication number
GB1316829A
GB1316829A GB1316829DA GB1316829A GB 1316829 A GB1316829 A GB 1316829A GB 1316829D A GB1316829D A GB 1316829DA GB 1316829 A GB1316829 A GB 1316829A
Authority
GB
United Kingdom
Prior art keywords
turned
thyristor
transistor
capacitor
event
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
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.)
Philips Electronics UK Ltd
Original Assignee
Philips Electronic and Associated Industries 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 Philips Electronic and Associated Industries Ltd filed Critical Philips Electronic and Associated Industries Ltd
Publication of GB1316829A publication Critical patent/GB1316829A/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
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
    • H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
    • H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M7/145—Conversion of ac power input into dc 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 thyratron or thyristor type requiring extinguishing means
    • H02M7/155—Conversion of ac power input into dc 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 thyratron or thyristor type requiring extinguishing means using semiconductor devices only
    • H02M7/1555—Conversion of ac power input into dc 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 thyratron or thyristor type requiring extinguishing means using semiconductor devices only with control circuit
    • H02M7/1557—Conversion of ac power input into dc 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 thyratron or thyristor type requiring extinguishing means using semiconductor devices only with control circuit with automatic control of the output voltage or current

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Lasers (AREA)

Abstract

1316829 Controlling thyristors PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 2 July 1970 32257/70 Heading H2F In a power supply comprising a phasecontrolled thyristor T1 a capacitor is charged from the A.C. side until a breakdown device D4 is triggered so as to turn on the thyristor and having a transistor in parallel with the capacitor arranged to be turned on after each triggering pulse and in the event of excessive output voltage. As described, C2 charges from the A.C. supply A via R5 until a breakdown device D4 becomes triggered when thyristor T1 is turned on, charging capacitors C5, C6. The conduction angle is controlled in dependence on the A.C. and D.C. voltages by transistor T2 connected via Zener diode D1. Transistor T3 is turned on after each trigger pulse by coupling via capacitor C4 so as to discharge C2. T3 is also turned on via R12 in the event of excessive D.C. voltage. The invention is applicable to T.V. receivers. Interfering pulses caused by the small conduction angle of T1 are minimized by means of a series inductor L wound on a mild steel core so as to have a high hysteresis loss during the pulses-as described in Specification 1,246,597 (See Division H1).
GB1316829D 1970-07-02 1970-07-02 Power supply arrangements Expired GB1316829A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3225770 1970-07-02

Publications (1)

Publication Number Publication Date
GB1316829A true GB1316829A (en) 1973-05-16

Family

ID=10335796

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1316829D Expired GB1316829A (en) 1970-07-02 1970-07-02 Power supply arrangements

Country Status (1)

Country Link
GB (1) GB1316829A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1982000549A1 (en) * 1980-08-04 1982-02-18 B Joseph Electrical switching device
EP0270450B1 (en) * 1986-11-28 1991-10-23 STMicroelectronics S.A. Low voltage power supply circuit without a step-down voltage network transformer

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1982000549A1 (en) * 1980-08-04 1982-02-18 B Joseph Electrical switching device
EP0270450B1 (en) * 1986-11-28 1991-10-23 STMicroelectronics S.A. Low voltage power supply circuit without a step-down voltage network transformer

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees