JPH02817U - - Google Patents
Info
- Publication number
- JPH02817U JPH02817U JP7814588U JP7814588U JPH02817U JP H02817 U JPH02817 U JP H02817U JP 7814588 U JP7814588 U JP 7814588U JP 7814588 U JP7814588 U JP 7814588U JP H02817 U JPH02817 U JP H02817U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- speaker
- output
- audio
- detection
- 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
- 238000001514 detection method Methods 0.000 claims description 5
- 230000005236 sound signal Effects 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Control Of Amplification And Gain Control (AREA)
- Amplifiers (AREA)
Description
第１図は本考案の一実施例を示す回路図、第２
図は従来例を示す回路図である。
１…音量調整回路、４…出力増幅器、１２…検
出回路、１３…制御回路。
Figure 1 is a circuit diagram showing one embodiment of the present invention;
The figure is a circuit diagram showing a conventional example. DESCRIPTION OF SYMBOLS 1... Volume adjustment circuit, 4... Output amplifier, 12... Detection circuit, 13... Control circuit.
Claims (1)
、出力増幅器にて増幅した後、一端が出力増幅器
の出力端側に接続され他端が接地されたスピーカ
に導出する音声出力回路であつて、前記スピーカ
両端の電位差の有無を検出してスピーカ短絡時に
検出信号を出力する検出回路と、該検出回路から
の検出信号を受けて作動しスピーカ短絡時におけ
る前記出力増幅器の電力損失を抑制する制御回路
とを具備する事を特徴とする音声出力回路。 An audio output circuit that amplifies the audio signal level-adjusted by the volume adjustment circuit using an output amplifier and then outputs the audio signal to a speaker having one end connected to the output end of the output amplifier and the other end grounded, the audio output circuit comprising: a detection circuit that detects the presence or absence of a potential difference across the speaker and outputs a detection signal when the speaker is short-circuited; and a control circuit that operates upon receiving the detection signal from the detection circuit and suppresses power loss of the output amplifier when the speaker is short-circuited. An audio output circuit characterized by comprising:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7814588U JPH02817U (en) | 1988-06-13 | 1988-06-13 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7814588U JPH02817U (en) | 1988-06-13 | 1988-06-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02817U true JPH02817U (en) | 1990-01-05 |
Family
ID=31303093
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7814588U Pending JPH02817U (en) | 1988-06-13 | 1988-06-13 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02817U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06159599A (en) * | 1992-11-26 | 1994-06-07 | Tsurumi Soda Co Ltd | Opening/closing valve for high pressure gas |
-
1988
- 1988-06-13 JP JP7814588U patent/JPH02817U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06159599A (en) * | 1992-11-26 | 1994-06-07 | Tsurumi Soda Co Ltd | Opening/closing valve for high pressure gas |
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