JPS59144911U - Muting circuit for audio equipment - Google Patents
Muting circuit for audio equipmentInfo
- Publication number
- JPS59144911U JPS59144911U JP3821283U JP3821283U JPS59144911U JP S59144911 U JPS59144911 U JP S59144911U JP 3821283 U JP3821283 U JP 3821283U JP 3821283 U JP3821283 U JP 3821283U JP S59144911 U JPS59144911 U JP S59144911U
- Authority
- JP
- Japan
- Prior art keywords
- audio equipment
- muting circuit
- circuit
- muting
- switching means
- 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)
- Noise Elimination (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
第１図は従来の実施例を示す回路図、第２図は本考案の
実施例を示す回路図、第３図は第１図においてＦＭラジ
オ回路からＡＭラジオ回路に切替えた場合のタイミング
チャート、第４図は第２図においてＦＭラジオ回路から
ＡＭラジオ回路に切替えた場合のタイミングチャートを
示す。
図中１はアンテナ、２はＦＭラジオ回路、３はＡＭラジ
オ回路、４はテープイコライザ回路、５は電源回路、６
はＡＭ／ＦＭ切替えスイッチ（ショーテイング）、７は
テープラジオ切替えスイッチ（ショーテイング）、８．
９． １０． １３． １６゜１９．２２，３０，３
１．３２．３３はダイオード、１１，１４．１７，２０
．２４はコンデンサ、１２．１５．１８．２１．２３は
抵抗、２５はＮＰＮ ）ランジスタ、２６はパワーアン
プ、２７はスピーカー、３４はＰＮＰ）ランジスタを表
わす。FIG. 1 is a circuit diagram showing a conventional embodiment, FIG. 2 is a circuit diagram showing an embodiment of the present invention, and FIG. 3 is a timing chart when switching from the FM radio circuit to the AM radio circuit in FIG. FIG. 4 shows a timing chart when switching from the FM radio circuit to the AM radio circuit in FIG. 2. In the figure, 1 is an antenna, 2 is an FM radio circuit, 3 is an AM radio circuit, 4 is a tape equalizer circuit, 5 is a power supply circuit, and 6
7 is an AM/FM selector switch (shorting), 7 is a tape radio selector switch (shorting), and 8.
9. 10. 13. 16°19.22,30,3
1.32.33 are diodes, 11,14.17,20
．． 24 is a capacitor, 12, 15, 18, 21, 23 is a resistor, 25 is an NPN) transistor, 26 is a power amplifier, 27 is a speaker, and 34 is a PNP) transistor.
Claims (1)
グスイッチの切換え時に負パルスを発生するスイッチン
グ手段とを備え、該スイッチング手段の出力により音響
機器にミュートをかける事を特徴とする音響機器のミュ
ーティング回路。A muting circuit for audio equipment, comprising a non-shorting switch and a switching means that generates a negative pulse when the non-shorting switch is switched, and muting the audio equipment by the output of the switching means. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3821283U JPS59144911U (en) | 1983-03-16 | 1983-03-16 | Muting circuit for audio equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3821283U JPS59144911U (en) | 1983-03-16 | 1983-03-16 | Muting circuit for audio equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS59144911U true JPS59144911U (en) | 1984-09-27 |
Family
ID=30168885
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3821283U Pending JPS59144911U (en) | 1983-03-16 | 1983-03-16 | Muting circuit for audio equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59144911U (en) |
-
1983
- 1983-03-16 JP JP3821283U patent/JPS59144911U/en active Pending
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