JPS5462721A - Oscillation preventive device of television receiving booster - Google Patents
Oscillation preventive device of television receiving boosterInfo
- 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
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
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)
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 |
-
1977
- 1977-10-27 JP JP12951977A patent/JPS5462721A/en active Pending
Cited By (1)
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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