JPS56122513A - Electric power supply system - Google Patents
Electric power supply systemInfo
- Publication number
- JPS56122513A JPS56122513A JP2717080A JP2717080A JPS56122513A JP S56122513 A JPS56122513 A JP S56122513A JP 2717080 A JP2717080 A JP 2717080A JP 2717080 A JP2717080 A JP 2717080A JP S56122513 A JPS56122513 A JP S56122513A
- Authority
- JP
- Japan
- Prior art keywords
- electric power
- circuit
- power supply
- 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
Abstract
PURPOSE: To reduce the electric power consumption and improve the electric power supply efficiency, by varying the supply voltage in accordance with an input signal level in the high output amplifier, and also supplying the proper supply voltage to the amplifier in accordance with the load connected to the output side of the amplifier.
CONSTITUTION: Since the relay switch 4 is connected to the terminal (b) side immediately after the electric power supply has been turned on, the impedance value of the load 3 is detected by the load detection circuit 6, and a control signal according to its impedance level is provided to the voltage control circuit 12. On the other hand, as for the input signal which has been provided to the input terminal 1, its signal level is detected by the input level detection circuit 11, and a control signal according to the signal level is provided to the circuit 12. The circuit 12 controls the output voltage of the electric power supply circuit 13 in accordane with the control signal which is obtained from the circuits 6, 11, and a result, the supply voltage according to the load impedance value and the input signal level is derived, and it is supplied to the amplifier 2.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2717080A JPS56122513A (en) | 1980-03-03 | 1980-03-03 | Electric power supply system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2717080A JPS56122513A (en) | 1980-03-03 | 1980-03-03 | Electric power supply system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS56122513A true JPS56122513A (en) | 1981-09-26 |
Family
ID=12213579
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2717080A Pending JPS56122513A (en) | 1980-03-03 | 1980-03-03 | Electric power supply system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS56122513A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5981114U (en) * | 1982-11-24 | 1984-06-01 | 日本コロムビア株式会社 | Power amplifier bias control device |
JPS6139706A (en) * | 1984-07-31 | 1986-02-25 | Matsushita Electric Ind Co Ltd | Output limit device of power amplifier |
DE19712571C1 (en) * | 1997-03-25 | 1998-06-10 | Becker Gmbh | Automobile amplifier with overload protection |
-
1980
- 1980-03-03 JP JP2717080A patent/JPS56122513A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5981114U (en) * | 1982-11-24 | 1984-06-01 | 日本コロムビア株式会社 | Power amplifier bias control device |
JPS6139706A (en) * | 1984-07-31 | 1986-02-25 | Matsushita Electric Ind Co Ltd | Output limit device of power amplifier |
DE19712571C1 (en) * | 1997-03-25 | 1998-06-10 | Becker Gmbh | Automobile amplifier with overload protection |
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