GB1432058A - Tyristors and protective circuits for thyristors - Google Patents

Tyristors and protective circuits for thyristors

Info

Publication number
GB1432058A
GB1432058A GB5543473A GB5543473A GB1432058A GB 1432058 A GB1432058 A GB 1432058A GB 5543473 A GB5543473 A GB 5543473A GB 5543473 A GB5543473 A GB 5543473A GB 1432058 A GB1432058 A GB 1432058A
Authority
GB
United Kingdom
Prior art keywords
thyristor
switching
energy
circuit
parallel
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
GB5543473A
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.)
Licentia Patent Verwaltungs GmbH
Original Assignee
Licentia Patent Verwaltungs GmbH
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 Licentia Patent Verwaltungs GmbH filed Critical Licentia Patent Verwaltungs GmbH
Publication of GB1432058A publication Critical patent/GB1432058A/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
    • H02M1/00—Details of apparatus for conversion
    • H02M1/08—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
    • H02M1/088—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters for the simultaneous control of series or parallel connected semiconductor devices

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Power Conversion In General (AREA)
  • Protection Of Static Devices (AREA)
  • Rectifiers (AREA)
  • Control Of Voltage And Current In General (AREA)
  • Details Of Television Scanning (AREA)

Abstract

1432058 Protecting thyristors LICENTIA PATENT VERWALTUNGS GmbH 29 Nov 1973 [29 Nov 1972] 55434/73 Heading H3T A protective circuit of a thyristor 1 which is connected in counter parallel to a rectifying diode 2 comprises a series circuit of a resistance 31 and a capacitor 32 connected in parallel to the thyristor and an RC arrangement 34-36 connected in parallel to the thyristor by means of a decoupling diode 33 poled in the current switching direction of the thyristor, the RC arrangement functions as a store for the overvoltages occurring in the switching of the thyristor and the energy stored is dissipated in a resistor 36 of the RC arrangement. As shown the thyristor 1 is fired with a switching frequency of 16 kHz for use in the horizontal deflection stage of television apparatus. A first RC circuit 31, 32 attenuates over-voltages occurring in switching of the thyristor. A second RC circuit 34-36 is fed with energy from over-voltages occurring in switching of the thyristor so that the energy is stored in a capacitor 35 which may be an electrolytic capacitor. The energy is then dissipated in a resistor 36.
GB5543473A 1972-11-29 1973-11-29 Tyristors and protective circuits for thyristors Expired GB1432058A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19722258380 DE2258380A1 (en) 1972-11-29 1972-11-29 PROTECTIVE CIRCUIT FOR THYRISTORS IGNITED WITH MEDIUM FREQUENCY SWITCHING SEQUENCE

Publications (1)

Publication Number Publication Date
GB1432058A true GB1432058A (en) 1976-04-14

Family

ID=5862991

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5543473A Expired GB1432058A (en) 1972-11-29 1973-11-29 Tyristors and protective circuits for thyristors

Country Status (3)

Country Link
JP (1) JPS4984776A (en)
DE (1) DE2258380A1 (en)
GB (1) GB1432058A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5447435A (en) * 1977-09-21 1979-04-14 Nec Corp Driving unit for external electrode type discharge display panel
JPS56171584U (en) * 1980-05-23 1981-12-18
SE9500761D0 (en) * 1995-03-02 1995-03-02 Abb Research Ltd Protection circuit for series-connected power semiconductors
SE515457C2 (en) * 1996-09-20 2001-08-06 Abb Research Ltd Method and device for power transistor
SE517688C2 (en) * 1997-03-24 2002-07-02 Abb Ab Method and apparatus for handling a short-circuit situation occurring in a circuit with several series-switchable extinguishers

Also Published As

Publication number Publication date
JPS4984776A (en) 1974-08-14
DE2258380A1 (en) 1974-06-06

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Legal Events

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