JPS5462721A - Oscillation preventive device of television receiving booster - Google Patents

Oscillation preventive device of television receiving booster

Info

Publication number
JPS5462721A
JPS5462721A JP12951977A JP12951977A JPS5462721A JP S5462721 A JPS5462721 A JP S5462721A JP 12951977 A JP12951977 A JP 12951977A JP 12951977 A JP12951977 A JP 12951977A JP S5462721 A JPS5462721 A JP S5462721A
Authority
JP
Japan
Prior art keywords
circuit
amplifier
switch
detecting
power
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
JP12951977A
Other languages
Japanese (ja)
Inventor
Isamu Furuya
Hidetoshi Gotanda
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP12951977A priority Critical patent/JPS5462721A/en
Publication of JPS5462721A publication Critical patent/JPS5462721A/en
Pending legal-status Critical Current

Links

Landscapes

  • Details Of Television Systems (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)

Abstract

PURPOSE: To eliminate bad influence on a TV reciever by detecting that an amplifier when oscillating abnormally generates higher outputs and by stopping the power supply to the amplifier circuit.
CONSTITUTION: If amplifier circuit 1 oscillates for some reason, an extremely high voltage appears at the input of circuit 1 or the output circuit. Setting R-SFF circuit 3 by detecting 2 this abnormal voltage makes switch circuit 5 stop the power supply to circuit 1 and circuit 1 stops operating. At this time display circuit 6 comes on, thereby indicating that circiut 1 is in the abnormal oscillation state. Next, after power switch 9 is turned off and circuit 1 is repaied, turning on switch 9 generates a reset pulse with a pulse voltage generated through the closing and, in consequence, circuit 3 is inverted to supply power to circuit 1, so that circuit 6 will go off.
COPYRIGHT: (C)1979,JPO&Japio
JP12951977A 1977-10-27 1977-10-27 Oscillation preventive device of television receiving booster Pending JPS5462721A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12951977A JPS5462721A (en) 1977-10-27 1977-10-27 Oscillation preventive device of television receiving booster

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12951977A JPS5462721A (en) 1977-10-27 1977-10-27 Oscillation preventive device of television receiving booster

Publications (1)

Publication Number Publication Date
JPS5462721A true JPS5462721A (en) 1979-05-21

Family

ID=15011499

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12951977A Pending JPS5462721A (en) 1977-10-27 1977-10-27 Oscillation preventive device of television receiving booster

Country Status (1)

Country Link
JP (1) JPS5462721A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6175671A (en) * 1984-09-21 1986-04-18 Miharu Tsushin Kk Trouble informing method of catv system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6175671A (en) * 1984-09-21 1986-04-18 Miharu Tsushin Kk Trouble informing method of catv system

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