JPS60184400U - stereo input circuit - Google Patents
stereo input circuitInfo
- Publication number
- JPS60184400U JPS60184400U JP7268784U JP7268784U JPS60184400U JP S60184400 U JPS60184400 U JP S60184400U JP 7268784 U JP7268784 U JP 7268784U JP 7268784 U JP7268784 U JP 7268784U JP S60184400 U JPS60184400 U JP S60184400U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- control voltage
- analog switch
- input circuit
- stereo
- 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
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図は本考案によるステレオ入力回路の一実施例を示
す図、第２図は従来のステレオ入力回路 −を示す図、
第３図イ９口はプラグ及び連動スイッチ付入力端子の説
明図である。
１．２・・・・・・入力端子、３，４・・・・・・第１
第２バツフア回路、５，６・・・・・・第１第２音声増
巾回路、８・・・・・・連動スイッチ、１０・・・・・
・アナログスイッチ、π・・・・・・ツェナダイオード
。
第２図
第３図FIG. 1 is a diagram showing an embodiment of a stereo input circuit according to the present invention, and FIG. 2 is a diagram showing a conventional stereo input circuit.
FIG. 3A9 is an explanatory diagram of an input terminal with a plug and an interlocking switch. 1.2...Input terminal, 3,4...1st
Second buffer circuit, 5, 6... First and second audio amplification circuit, 8... Interlocking switch, 10...
・Analog switch, π...Zena diode. Figure 2 Figure 3
Claims (1)
される第１、第２入力端子と、この第一 １、第２
入力端子に夫々接続される第１、第２バッファ回路と、
前記第１バッファ回路に常時接続されている第１音声増
巾回路と、前記第１若しくは第２バッファ回路出力を制
御電圧により選択するアナログスイッチと、該アナログ
スイッチ出力が供給される第２音声増巾回路と、前記ア
ナログスイッチに制御電圧を印加する手段と、前記第２
入力端子への音声信号の接続の有無に連動して前記制御
電圧を異なる値に切換える連動スイッチとから成るステ
レオ入力回路。first and second input terminals into which first and second audio signals constituting stereo are respectively introduced;
first and second buffer circuits connected to the input terminals, respectively;
a first audio amplification circuit that is always connected to the first buffer circuit; an analog switch that selects the first or second buffer circuit output by a control voltage; and a second audio amplification circuit that is supplied with the analog switch output. a width circuit, means for applying a control voltage to the analog switch, and a means for applying a control voltage to the analog switch;
A stereo input circuit comprising an interlocking switch that switches the control voltage to a different value in conjunction with whether or not an audio signal is connected to an input terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7268784U JPS60184400U (en) | 1984-05-17 | 1984-05-17 | stereo input circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7268784U JPS60184400U (en) | 1984-05-17 | 1984-05-17 | stereo input circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60184400U true JPS60184400U (en) | 1985-12-06 |
Family
ID=30611329
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7268784U Pending JPS60184400U (en) | 1984-05-17 | 1984-05-17 | stereo input circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60184400U (en) |
-
1984
- 1984-05-17 JP JP7268784U patent/JPS60184400U/en active Pending
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