JPS51147906A - Pre-amplifier - Google Patents
Pre-amplifierInfo
- Publication number
- JPS51147906A JPS51147906A JP7253975A JP7253975A JPS51147906A JP S51147906 A JPS51147906 A JP S51147906A JP 7253975 A JP7253975 A JP 7253975A JP 7253975 A JP7253975 A JP 7253975A JP S51147906 A JPS51147906 A JP S51147906A
- Authority
- JP
- Japan
- Prior art keywords
- amplifier
- inputed
- microphone
- preset level
- automatically stop
- 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
- Control Of Amplification And Gain Control (AREA)
- Amplifiers (AREA)
- Interconnected Communication Systems, Intercoms, And Interphones (AREA)
Abstract
PURPOSE: A pre-amplifier adapted to automatically stop its amplifier function when a signal lower than a preset level is inputed to a microphone.
COPYRIGHT: (C)1976,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7253975A JPS51147906A (en) | 1975-06-13 | 1975-06-13 | Pre-amplifier |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7253975A JPS51147906A (en) | 1975-06-13 | 1975-06-13 | Pre-amplifier |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS51147906A true JPS51147906A (en) | 1976-12-18 |
Family
ID=13492247
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7253975A Pending JPS51147906A (en) | 1975-06-13 | 1975-06-13 | Pre-amplifier |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS51147906A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5934729A (en) * | 1982-08-20 | 1984-02-25 | Mitsubishi Electric Corp | Power saving type communication equipment |
JPH0272707A (en) * | 1988-09-08 | 1990-03-13 | Matsushita Electric Ind Co Ltd | Automatic amplitude setting circuit |
-
1975
- 1975-06-13 JP JP7253975A patent/JPS51147906A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5934729A (en) * | 1982-08-20 | 1984-02-25 | Mitsubishi Electric Corp | Power saving type communication equipment |
JPH0272707A (en) * | 1988-09-08 | 1990-03-13 | Matsushita Electric Ind Co Ltd | Automatic amplitude setting circuit |
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