JPS5721105A - Audio power amplifier - Google Patents
Audio power amplifierInfo
- Publication number
- JPS5721105A JPS5721105A JP9495680A JP9495680A JPS5721105A JP S5721105 A JPS5721105 A JP S5721105A JP 9495680 A JP9495680 A JP 9495680A JP 9495680 A JP9495680 A JP 9495680A JP S5721105 A JPS5721105 A JP S5721105A
- Authority
- JP
- Japan
- Prior art keywords
- speaker
- amplifier
- input terminal
- negative feedback
- type
- 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 enable voltage drive for any type of speaker, by operating limited speakers as a series negative feedback circuit of current driving type through switching and operating other speakers as a parallel negative feedback circuit of voltage driving type.
CONSTITUTION: When a speaker 4 is a limited and specified type, a switch 21 is closed and switches 20, 22 are opened. In this case, an input ei applied to an input terminal 1 is inputted to an amplifier 2 via peak suppressors 6, 7, and series negative feedback is made since a current signal is fed back to an inverting input terminal of an amplifier 2 and a specified current proportional to the input ei is applied to the speaker 4. On the other hand, to perform voltage drive of the speaker 4, the switch 21 is opened and switches 20, 22 are closed. In this case, since a voltage signal is fed back to the inverting input terminal of the amplifier 2, parallel feedback is made and the speaker 4 is in voltage drive.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9495680A JPS5721105A (en) | 1980-07-14 | 1980-07-14 | Audio power amplifier |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9495680A JPS5721105A (en) | 1980-07-14 | 1980-07-14 | Audio power amplifier |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5721105A true JPS5721105A (en) | 1982-02-03 |
Family
ID=14124377
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9495680A Pending JPS5721105A (en) | 1980-07-14 | 1980-07-14 | Audio power amplifier |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5721105A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5921108A (en) * | 1982-07-26 | 1984-02-03 | Sony Corp | Power amplifier having constant current output characteristic |
JPS59189317U (en) * | 1983-06-02 | 1984-12-15 | 三菱電機株式会社 | current amplifier |
-
1980
- 1980-07-14 JP JP9495680A patent/JPS5721105A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5921108A (en) * | 1982-07-26 | 1984-02-03 | Sony Corp | Power amplifier having constant current output characteristic |
JPS59189317U (en) * | 1983-06-02 | 1984-12-15 | 三菱電機株式会社 | current amplifier |
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