JPS5495159A - Amplifier - Google Patents
AmplifierInfo
- Publication number
- JPS5495159A JPS5495159A JP298778A JP298778A JPS5495159A JP S5495159 A JPS5495159 A JP S5495159A JP 298778 A JP298778 A JP 298778A JP 298778 A JP298778 A JP 298778A JP S5495159 A JPS5495159 A JP S5495159A
- Authority
- JP
- Japan
- Prior art keywords
- sound volume
- circuit
- volume adjustment
- negative feedback
- adjustment unit
- 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 improve the distortion rate of output by giving a constitution where the negative feedback quantity of a negative feedback circuit is automatically changed according to the adjustment position of a sound volume adjustment unit and preventing the distortion rate from changing due to the state of signal input.
CONSTITUTION: An amplifier is constituted by circuit 1, which is equipped with a sound volume adjustment unit and a sound volume adjustment position detector generating the output according to the adjustment position of the sound volume adjustment unit, and amplifier circuit 5 equipped with a negative feedback circuit which is controlled by the output from terminal 4 according to the position of the sound volume adjustment unit of circuit 1. In this constitution, circuit 1 is provided with variable resistance VR1, which constitutes a sound volume regulator, and variable resistor VR2, which constitutes a sound volume adjustment position detector, and these variable resistors VR1 and VR2 are interlocked with each other and are operated to apply the signal, which is detected by variable resistance VR2, to the feedback amplifier circuit of amplifier circuit 2 through terminal 4, thereby adjusting a negative feedback quantity.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP298778A JPS5495159A (en) | 1978-01-13 | 1978-01-13 | Amplifier |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP298778A JPS5495159A (en) | 1978-01-13 | 1978-01-13 | Amplifier |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5495159A true JPS5495159A (en) | 1979-07-27 |
Family
ID=11544717
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP298778A Pending JPS5495159A (en) | 1978-01-13 | 1978-01-13 | Amplifier |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5495159A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5721112A (en) * | 1980-07-12 | 1982-02-03 | Eikou Nomitsu | Signal output variable amplifier |
-
1978
- 1978-01-13 JP JP298778A patent/JPS5495159A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5721112A (en) * | 1980-07-12 | 1982-02-03 | Eikou Nomitsu | Signal output variable amplifier |
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