JPS54161304A - Amplifying device - Google Patents
Amplifying deviceInfo
- Publication number
- JPS54161304A JPS54161304A JP7008478A JP7008478A JPS54161304A JP S54161304 A JPS54161304 A JP S54161304A JP 7008478 A JP7008478 A JP 7008478A JP 7008478 A JP7008478 A JP 7008478A JP S54161304 A JPS54161304 A JP S54161304A
- Authority
- JP
- Japan
- Prior art keywords
- output terminal
- main voltage
- main
- potential
- 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.)
- Pending
Links
Landscapes
- Amplifiers (AREA)
Abstract
PURPOSE: To prevent the DC potential at an output terminal from fluctuating by cutting off the bias current of an amplifier through a switching circuit when the main voltage is lower than a preset level.
CONSTITUTION: The input signals from the input terminal 1 of an amplifier 26, which as its positive and negative main terminals 22 and 25 supplied with an electric power, are amplified and fed from its output terminal 23 to a load 24. A main voltage detecting circuit 29 detects the main voltage and drives a switching circuit 28, when the main voltage is low, to cut off a bias circuit 29. On the other hand, when the main voltage is raised to such a level that the DC potential at the output terminal 23 grounded to the earth through the load 24 does not fluctuate, the circuit 29 is likewise rendered conductive so that the potential at the output terminal, which is instantly generated upon the closing and clocking operations of the main power, can be prevented from fluctuating.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7008478A JPS54161304A (en) | 1978-06-09 | 1978-06-09 | Amplifying device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7008478A JPS54161304A (en) | 1978-06-09 | 1978-06-09 | Amplifying device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS54161304A true JPS54161304A (en) | 1979-12-20 |
Family
ID=13421311
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7008478A Pending JPS54161304A (en) | 1978-06-09 | 1978-06-09 | Amplifying device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54161304A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56123111A (en) * | 1980-03-05 | 1981-09-28 | Hitachi Ltd | Muting circuit |
JPS57117818U (en) * | 1981-01-14 | 1982-07-21 |
-
1978
- 1978-06-09 JP JP7008478A patent/JPS54161304A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56123111A (en) * | 1980-03-05 | 1981-09-28 | Hitachi Ltd | Muting circuit |
JPS57117818U (en) * | 1981-01-14 | 1982-07-21 |
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