JPS599614U - Shock noise prevention circuit for audio equipment - Google Patents
Shock noise prevention circuit for audio equipmentInfo
- Publication number
- JPS599614U JPS599614U JP10490582U JP10490582U JPS599614U JP S599614 U JPS599614 U JP S599614U JP 10490582 U JP10490582 U JP 10490582U JP 10490582 U JP10490582 U JP 10490582U JP S599614 U JPS599614 U JP S599614U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- audio signal
- shock noise
- noise prevention
- square wave
- 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
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
８ 第１図は従来の音響機器のショックノイズ防止回
路を示す回路図、第２図イ１口はシュミットトリガ回路
の入力端子及び出力端子の電圧波形を示す図、第３図は
本考案に係る音響機器のショックノイズ防止回路を示す
回路図である。
２・・・シュミットトリガ回路、６・・・オーディオ信
号増幅回路、７・・・オーディオ信号減衰回路、ＳＷｌ
・・・電源スィッチ。
第１図8 Figure 1 is a circuit diagram showing a conventional shock noise prevention circuit for audio equipment, Figure 2 A is a diagram showing voltage waveforms at the input and output terminals of a Schmitt trigger circuit, and Figure 3 is a circuit diagram according to the present invention. FIG. 2 is a circuit diagram showing a shock noise prevention circuit for audio equipment. 2...Schmitt trigger circuit, 6...audio signal amplification circuit, 7...audio signal attenuation circuit, SWl
...Power switch. Figure 1
Claims (1)
発生回路と、オーディオ信号増幅回路と、該オーディオ
信号増幅回路に印加されるオーディオ信号を減衰させる
オーディオ信号減衰回路とを備えた音響機器に於いて、
前記方形波発生回路を前記オーディオ信号減衰回路に接
続し、前記電源スィッチの投入時前記方形波発生回路の
出力を前記オーディオ信号減衰回路に加えて該オーディ
オ信号減衰回路を動作させ、前記電源スィッチの投入時
のショックノイズを防止してなる音響機器のショックノ
イズ防止回路。An audio device comprising a square wave generation circuit that generates a square wave for a predetermined period of time when a power switch is turned on, an audio signal amplification circuit, and an audio signal attenuation circuit that attenuates an audio signal applied to the audio signal amplification circuit. There,
The square wave generation circuit is connected to the audio signal attenuation circuit, and when the power switch is turned on, the output of the square wave generation circuit is applied to the audio signal attenuation circuit to operate the audio signal attenuation circuit. A shock noise prevention circuit for audio equipment that prevents shock noise when it is turned on.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10490582U JPS599614U (en) | 1982-07-09 | 1982-07-09 | Shock noise prevention circuit for audio equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10490582U JPS599614U (en) | 1982-07-09 | 1982-07-09 | Shock noise prevention circuit for audio equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS599614U true JPS599614U (en) | 1984-01-21 |
Family
ID=30246128
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10490582U Pending JPS599614U (en) | 1982-07-09 | 1982-07-09 | Shock noise prevention circuit for audio equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS599614U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5762605A (en) * | 1980-10-02 | 1982-04-15 | Matsushita Electric Ind Co Ltd | Suppressing device for electric power on-and-off sound of amplifier |
-
1982
- 1982-07-09 JP JP10490582U patent/JPS599614U/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5762605A (en) * | 1980-10-02 | 1982-04-15 | Matsushita Electric Ind Co Ltd | Suppressing device for electric power on-and-off sound of amplifier |
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