JPS5466025A - Preventing device for oscillation of television receiving booster - Google Patents
Preventing device for oscillation of television receiving boosterInfo
- Publication number
- JPS5466025A JPS5466025A JP13294777A JP13294777A JPS5466025A JP S5466025 A JPS5466025 A JP S5466025A JP 13294777 A JP13294777 A JP 13294777A JP 13294777 A JP13294777 A JP 13294777A JP S5466025 A JPS5466025 A JP S5466025A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- oscillation
- output
- amplifier
- load
- 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
- Television Receiver Circuits (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
Abstract
PURPOSE: To prevent oscillation by detecting an abnormal oscillation voltage and by operating a switching circuit connected to the output of a booster by its detection output for making a connection or disconnection between the output of an amplifier and a load.
CONSTITUTION: An abnormal voltage due to the oscillation of amplifier-booster 1, detected oscillation detection circuit 2, is DC-amplified, and a trigger signal is applied to the input of FF circuit 3. Then, switching circuit 4 is controlled by either output of FF circuit 3. Circuit 4 is arranged at the closest place to the load of outputs of amplifier circuit 1, and the output of the FF circuit allows the switching circuit to make a connection or disconnection between circuit 1 and the load. By the other output of FF circuit 3, display circuit 6 is operated to discriminate an operation stop from that due to other cause. Afer the inspection and repair of the oscillation, a signal from reset circuit 5 is supplied to either input of FF circuit 3 to reset circuit 3, thereby making circuit 4 return to the normal state.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13294777A JPS5466025A (en) | 1977-11-05 | 1977-11-05 | Preventing device for oscillation of television receiving booster |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13294777A JPS5466025A (en) | 1977-11-05 | 1977-11-05 | Preventing device for oscillation of television receiving booster |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5466025A true JPS5466025A (en) | 1979-05-28 |
Family
ID=15093205
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13294777A Pending JPS5466025A (en) | 1977-11-05 | 1977-11-05 | Preventing device for oscillation of television receiving booster |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5466025A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0227393A2 (en) | 1985-12-16 | 1987-07-01 | Nippon Telegraph And Telephone Corporation | Radio repeater with spillover measurement |
JP2005064628A (en) * | 2003-08-20 | 2005-03-10 | Mitsubishi Materials Corp | Relay amplifier |
-
1977
- 1977-11-05 JP JP13294777A patent/JPS5466025A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0227393A2 (en) | 1985-12-16 | 1987-07-01 | Nippon Telegraph And Telephone Corporation | Radio repeater with spillover measurement |
JP2005064628A (en) * | 2003-08-20 | 2005-03-10 | Mitsubishi Materials Corp | Relay amplifier |
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