JPH0167818U - - Google Patents
Info
- Publication number
- JPH0167818U JPH0167818U JP1987162344U JP16234487U JPH0167818U JP H0167818 U JPH0167818 U JP H0167818U JP 1987162344 U JP1987162344 U JP 1987162344U JP 16234487 U JP16234487 U JP 16234487U JP H0167818 U JPH0167818 U JP H0167818U
- Authority
- JP
- Japan
- Prior art keywords
- switch
- circuit
- time
- elapsed
- closes
- 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)
Description
第１図は、本考案の一実施例を適用したオーデ
イオ・アンプの回路構成を示すブロツク図、第２
図は、従来のミユーテイング回路を有するオーデ
イオ・アンプの回路構成を示すブロツク図である
。
１２……演算増幅器、１６，１８……トランジ
スタ（コンプリメンタリ回路）、４０，４４，５
２，５６……リレー・スイツチ、４２，４６，５
４，５８……リレー、６０……スイツチ制御回路
。
FIG. 1 is a block diagram showing the circuit configuration of an audio amplifier to which an embodiment of the present invention is applied, and FIG.
FIG. 1 is a block diagram showing the circuit configuration of an audio amplifier having a conventional muting circuit. 12...Operation amplifier, 16, 18...Transistor (complementary circuit), 40, 44, 5
2,56...Relay switch, 42,46,5
4, 58...Relay, 60...Switch control circuit.
Claims (1)
・アンプにおいて、 前記電圧増幅回路と電源回路との間に設けられ
た第１のスイツチと、 前記出力回路と電源回路との間に設けられた第
２のスイツチと、 電源のスイツチ・オンに応動して前記第１のス
イツチを閉成させるとともに所定時間の経過後に
前記第２のスイツチを閉成させ、電源のスイツチ
・オフに応動して前記第２のスイツチを開成させ
るとともに所定時間の経過後に前記第１のスイツ
チを開成させるスイツチ制御回路と、 を備えることを特徴とするミユーテイング回路。[Claims for Utility Model Registration] An audio amplifier having a voltage amplification circuit and an output circuit, comprising: a first switch provided between the voltage amplification circuit and the power supply circuit; a second switch provided between the switches; and a second switch that closes the first switch in response to the power switch being turned on, and closes the second switch after a predetermined time has elapsed to turn the power switch OFF. a switch control circuit that opens the second switch in response to the lapse of a predetermined period of time and opens the first switch after a predetermined period of time has elapsed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987162344U JPH0167818U (en) | 1987-10-23 | 1987-10-23 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987162344U JPH0167818U (en) | 1987-10-23 | 1987-10-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0167818U true JPH0167818U (en) | 1989-05-01 |
Family
ID=31446083
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987162344U Pending JPH0167818U (en) | 1987-10-23 | 1987-10-23 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0167818U (en) |
-
1987
- 1987-10-23 JP JP1987162344U patent/JPH0167818U/ja active Pending