JPH0247819U - - Google Patents
Info
- Publication number
- JPH0247819U JPH0247819U JP12752788U JP12752788U JPH0247819U JP H0247819 U JPH0247819 U JP H0247819U JP 12752788 U JP12752788 U JP 12752788U JP 12752788 U JP12752788 U JP 12752788U JP H0247819 U JPH0247819 U JP H0247819U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- switch
- muting
- amplifier
- input terminal
- 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
- 238000010586 diagram Methods 0.000 description 4
- 230000003321 amplification Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
Landscapes
- Amplifiers (AREA)
- Electronic Switches (AREA)
Description
第１図は本考案の一実施例を示すブロツク図で
、第２図は本考案の一実施例のスイツチ回路図、
第３図は相互リセツト形スイツチ回路の一例を示
す図、第４図は動作波形を説明するための図であ
る。
１……増幅器、２……入力端子、３……相互リ
セツト形スイツチ回路、４……増幅回路、５……
ミユーテイング回路、６……出力端子、７……ス
ピーカ、８……スイツチ、９……スイツチ回路、
１０……判別回路、１１……制御端子、１２……
電圧変換回路である。
FIG. 1 is a block diagram showing an embodiment of the present invention, and FIG. 2 is a switch circuit diagram of an embodiment of the present invention.
FIG. 3 is a diagram showing an example of a mutual reset type switch circuit, and FIG. 4 is a diagram for explaining operating waveforms. DESCRIPTION OF SYMBOLS 1...Amplifier, 2...Input terminal, 3...Mutual reset type switch circuit, 4...Amplification circuit, 5...
Muting circuit, 6... Output terminal, 7... Speaker, 8... Switch, 9... Switch circuit,
10...Discrimination circuit, 11...Control terminal, 12...
This is a voltage conversion circuit.
Claims (1)
端子を選択する相互リセツト小型スイツチ回路と
、相互リセツト形スイツチ回路に制御信号を供給
するスイツチ回路と、スイツチ回路を切換えるノ
ンシヨーテイング型スイツチと、スイツチのノン
シヨーテイング時を検出してミユーテイング回路
を制御する判別回路と、判別回路の出力信号で増
幅器の出力をミユーテイングするミユーテイング
回路とを具備し、ノンシヨーテイング型スイツチ
の切換を検出して増幅器をミユーテイングした後
ミユーテイング状態を維持し、相互リセツト形ス
イツチ回路に切換信号を加えて入力端子を増幅器
に切換え接続した後ミユーテイングをＯＦＦする
様になすと共に判別回路とノンシヨーテイングス
イツチ間をダイオードで接続して判別回路の入力
端とスイツチ間相互を分離したことを特徴とする
スイツチ回路。 In an amplifier having multiple types of input terminals, a mutual reset small switch circuit that selects the input terminal, a switch circuit that supplies a control signal to the mutual reset type switch circuit, and a non-changing type switch that switches the switch circuits. It is equipped with a discrimination circuit that detects when the switch is non-shooting and controls the muting circuit, and a muting circuit that mutes the output of the amplifier using the output signal of the discrimination circuit. After mutating, the muting state is maintained, a switching signal is applied to the mutual reset type switch circuit, the input terminal is switched and connected to the amplifier, and then the muting is turned off, and a diode is connected between the discrimination circuit and the non-switching switch. A switch circuit characterized in that the input terminal of the discrimination circuit and the switch are separated from each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12752788U JPH0247819U (en) | 1988-09-29 | 1988-09-29 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12752788U JPH0247819U (en) | 1988-09-29 | 1988-09-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0247819U true JPH0247819U (en) | 1990-04-03 |
Family
ID=31380036
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12752788U Pending JPH0247819U (en) | 1988-09-29 | 1988-09-29 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0247819U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS542346B1 (en) * | 1970-10-23 | 1979-02-06 |
-
1988
- 1988-09-29 JP JP12752788U patent/JPH0247819U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS542346B1 (en) * | 1970-10-23 | 1979-02-06 |
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