GB1371447A - Protective circuit for television receivers - Google Patents

Protective circuit for television receivers

Info

Publication number
GB1371447A
GB1371447A GB4247272A GB4247272A GB1371447A GB 1371447 A GB1371447 A GB 1371447A GB 4247272 A GB4247272 A GB 4247272A GB 4247272 A GB4247272 A GB 4247272A GB 1371447 A GB1371447 A GB 1371447A
Authority
GB
United Kingdom
Prior art keywords
thyristor
sept
event
control electrode
protective circuit
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
GB4247272A
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.)
SABA GmbH
Original Assignee
SABA 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
Priority claimed from DE19712147053 external-priority patent/DE2147053C/en
Application filed by SABA GmbH filed Critical SABA GmbH
Publication of GB1371447A publication Critical patent/GB1371447A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/20—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess voltage
    • H02H3/202—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess voltage for dc systems
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/24—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to undervoltage or no-voltage
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/46—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to frequency deviations
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/50—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to the appearance of abnormal wave forms, e.g. ac in dc installations
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/20—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for electronic equipment
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K4/00—Generating pulses having essentially a finite slope or stepped portions
    • H03K4/06—Generating pulses having essentially a finite slope or stepped portions having triangular shape
    • H03K4/08—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape
    • H03K4/085—Protection of sawtooth generators

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Details Of Television Scanning (AREA)
  • Television Receiver Circuits (AREA)
  • Emergency Protection Circuit Devices (AREA)

Abstract

1371447 Protective circuits for television time- bases SABA SCHWARZWAELDER APPARATE - BAU - ANSTALT AUGUST SCHWER SOEHNE GmbH 13 Sept 1972 [21 Sept 1971] 42472/72 Headings H3T and H4T [Also in Division H2] A protective arrangement for a television receiver has a main switch 1 tripped or actuated by a solenoid 9, or a motor, connected in the anode circuit of a thyristor 8, to the control electrode of which is applied the harmonics arising at a capacitor 3 of a smoothing circuit on the occurrence of a picture tube flash-over. Alternatively, the control electrode of the thyristor may be connected to a transistor so that the thyristor may be rendered conductive in the event of undervoltage and to a Zener diode which breaks down to render the thyristor conducting in the event of overvoltage, Fig. 2 (not shown).
GB4247272A 1971-09-21 1972-09-13 Protective circuit for television receivers Expired GB1371447A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19712147053 DE2147053C (en) 1971-09-21 Protection circuit for television receivers

Publications (1)

Publication Number Publication Date
GB1371447A true GB1371447A (en) 1974-10-23

Family

ID=5820146

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4247272A Expired GB1371447A (en) 1971-09-21 1972-09-13 Protective circuit for television receivers

Country Status (8)

Country Link
JP (1) JPS4839114A (en)
BE (1) BE787333A (en)
CH (1) CH538780A (en)
DE (1) DE2147053B1 (en)
FR (1) FR2153290B3 (en)
GB (1) GB1371447A (en)
IT (1) IT962387B (en)
NL (1) NL7208840A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2291547A (en) * 1994-07-11 1996-01-24 Thomson Consumer Electronics Overload protection circuit for electronic apparatus

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3970915A (en) * 1974-12-30 1976-07-20 Rca Corporation Fault detector and interrupt circuit useful in a television signal processing system
JPS52147743A (en) * 1976-06-04 1977-12-08 Mitsubishi Electric Corp Non-power off power supply
EP0729087A3 (en) * 1995-02-22 1998-03-18 General Instrument Corporation Adaptive power direct current pre-regulator

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2291547A (en) * 1994-07-11 1996-01-24 Thomson Consumer Electronics Overload protection circuit for electronic apparatus

Also Published As

Publication number Publication date
CH538780A (en) 1973-06-30
JPS4839114A (en) 1973-06-08
FR2153290B3 (en) 1975-10-17
DE2147053B1 (en) 1972-09-21
BE787333A (en) 1972-12-01
NL7208840A (en) 1973-03-23
IT962387B (en) 1973-12-20
FR2153290A1 (en) 1973-05-04

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Legal Events

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