JPS5772432A - Operation stop device for fault of power supply switch of television - Google Patents

Operation stop device for fault of power supply switch of television

Info

Publication number
JPS5772432A
JPS5772432A JP55146907A JP14690780A JPS5772432A JP S5772432 A JPS5772432 A JP S5772432A JP 55146907 A JP55146907 A JP 55146907A JP 14690780 A JP14690780 A JP 14690780A JP S5772432 A JPS5772432 A JP S5772432A
Authority
JP
Japan
Prior art keywords
level
power supply
fault
television
stop device
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.)
Pending
Application number
JP55146907A
Other languages
Japanese (ja)
Inventor
Yuji Ito
Tokuzo Fujii
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP55146907A priority Critical patent/JPS5772432A/en
Publication of JPS5772432A publication Critical patent/JPS5772432A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N3/00—Scanning details of television systems; Combination thereof with generation of supply voltages
    • H04N3/10—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical
    • H04N3/16—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical by deflecting electron beam in cathode-ray tube, e.g. scanning corrections
    • H04N3/20—Prevention of damage to cathode-ray tubes in the event of failure of scanning

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Television Receiver Circuits (AREA)
  • Details Of Television Systems (AREA)
  • Circuits Of Receivers In General (AREA)

Abstract

PURPOSE:To stop the power supply to each TV receiving part to report a fault of the TV receiver to the user when a triode two-may-way thyristor becomes faulty by short-circuit to operate the TV receiver CONSTITUTION:When a triode two-way thyristor 20 becomes faulty by short- circuit, a high-level signal 35 is outputted from a voltage output detection circuit 30 through power supply switches 12 and 13 are tuned off together. Meanwhile, signal lines 31 and 34 are low-level. Respective low-level signals are inverted by inverters 31 and 36. Consequently, all of inputs of an AND gate 32 are high-level, and the output is high-level. This high-level signal is applied to a flip-flop 70, and an output 37 becomes high-level to control circuits to be controlled, thereby stopping operations of circuits to be controlled.
JP55146907A 1980-10-22 1980-10-22 Operation stop device for fault of power supply switch of television Pending JPS5772432A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55146907A JPS5772432A (en) 1980-10-22 1980-10-22 Operation stop device for fault of power supply switch of television

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55146907A JPS5772432A (en) 1980-10-22 1980-10-22 Operation stop device for fault of power supply switch of television

Publications (1)

Publication Number Publication Date
JPS5772432A true JPS5772432A (en) 1982-05-06

Family

ID=15418262

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55146907A Pending JPS5772432A (en) 1980-10-22 1980-10-22 Operation stop device for fault of power supply switch of television

Country Status (1)

Country Link
JP (1) JPS5772432A (en)

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