JPH02128417U - - Google Patents
Info
- Publication number
- JPH02128417U JPH02128417U JP3668589U JP3668589U JPH02128417U JP H02128417 U JPH02128417 U JP H02128417U JP 3668589 U JP3668589 U JP 3668589U JP 3668589 U JP3668589 U JP 3668589U JP H02128417 U JPH02128417 U JP H02128417U
- Authority
- JP
- Japan
- Prior art keywords
- audio device
- amplifier output
- power
- audio
- mutes
- 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
- 238000012544 monitoring process Methods 0.000 claims 1
- 230000005236 sound signal Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
Landscapes
- Amplifiers (AREA)
Description
第１図は本考案のオーデイオ装置のブロツク図
、第２図は電源オン／オフにおけるＯＣＬアンプ
の等価回路、第３図は本考案の別の実施例である
電源オン／オフ検出部のブロツク図、第４図は電
源オン／オフにおけるＯＴＬアンプの等価回路、
第５図は従来の構成ブロツク図である。
１１……ＯＣＬアンプ、１２ａ……電源オン／
オフ検出部、１２ｅ……ミユート回路、１２ｇ…
…電圧コンパレータ。
Fig. 1 is a block diagram of the audio device of the present invention, Fig. 2 is an equivalent circuit of an OCL amplifier during power on/off, and Fig. 3 is a block diagram of a power on/off detection section that is another embodiment of the present invention. , Figure 4 is the equivalent circuit of the OTL amplifier during power on/off,
FIG. 5 is a conventional configuration block diagram. 11...OCL amplifier, 12a...Power on/
Off detection section, 12e... Mute circuit, 12g...
...voltage comparator.
Claims (1)
流又は交流を印加する手段と、 アンプ出力電圧を監視してオーデイオ機器の電
源オンを検出する電圧コンパレータと、 前記電源オンによりオーデイオ信号をミユート
するミユート回路を有することを特徴とするオー
デイオ装置。[Claims for Utility Model Registration] Means for applying direct current or alternating current to the amplifier output of an audio device via a resistor, a voltage comparator for monitoring the amplifier output voltage to detect when the audio device is powered on, and when the power is turned on. An audio device characterized by having a mute circuit that mutes an audio signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3668589U JPH02128417U (en) | 1989-03-30 | 1989-03-30 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3668589U JPH02128417U (en) | 1989-03-30 | 1989-03-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02128417U true JPH02128417U (en) | 1990-10-23 |
Family
ID=31543129
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3668589U Pending JPH02128417U (en) | 1989-03-30 | 1989-03-30 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02128417U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006229853A (en) * | 2005-02-21 | 2006-08-31 | Rohm Co Ltd | Signal amplifier circuit and electronic apparatus using the same |
-
1989
- 1989-03-30 JP JP3668589U patent/JPH02128417U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006229853A (en) * | 2005-02-21 | 2006-08-31 | Rohm Co Ltd | Signal amplifier circuit and electronic apparatus using the same |