JPS59180515U - Signal switching circuit - Google Patents
Signal switching circuitInfo
- Publication number
- JPS59180515U JPS59180515U JP7329083U JP7329083U JPS59180515U JP S59180515 U JPS59180515 U JP S59180515U JP 7329083 U JP7329083 U JP 7329083U JP 7329083 U JP7329083 U JP 7329083U JP S59180515 U JPS59180515 U JP S59180515U
- Authority
- JP
- Japan
- Prior art keywords
- signal source
- main signal
- adding means
- impedance
- switching circuit
- 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)
- Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (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) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
図は信号切換え回路を示し、第１図は従来例、第２図は
本考案の実施例を示す図である。 、ｌ−ａ・・・
主信号源入力端子、１−ｂ・・・副信号源入力端子、２
・・・バッファーアンプ、３．４・・・オペアンプ、５
・・・継接点スイッチ、５ａ−５ｂ・・・固定接点、６
・・・出力端子、Ｒ工〜Ｒ７・・・抵抗。The figures show signal switching circuits, with FIG. 1 showing a conventional example and FIG. 2 showing an embodiment of the present invention. , l-a...
Main signal source input terminal, 1-b...Sub signal source input terminal, 2
... Buffer amplifier, 3.4... Operational amplifier, 5
...Relay contact switch, 5a-5b...Fixed contact, 6
...Output terminal, R-R7...Resistance.
Claims (1)
手段と、主信号源と加算手段用カメの後段への送出を切
換える継接点スイッチとを備え、前記主信号源の出力イ
ンピーダンスを小さくし、主信号源から加算手段出力ま
での使用周波数帯域での伝達関数をほぼ１とし、前記加
算手段の出力、 インピーダンスを主信号源インピー
ダンスより充分大きくするようにしたことを特徴とする
信号切換え回路。The output impedance of the main signal source includes a main signal source, a sub-signal source, an adding means for adding the two signal sources, and a junction switch for switching between sending the main signal source and the adding means to the subsequent stage of the camera, and the output impedance of the main signal source is is made small, the transfer function in the used frequency band from the main signal source to the output of the adding means is approximately 1, and the output and impedance of the adding means are made sufficiently larger than the main signal source impedance. switching circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7329083U JPS59180515U (en) | 1983-05-16 | 1983-05-16 | Signal switching circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7329083U JPS59180515U (en) | 1983-05-16 | 1983-05-16 | Signal switching circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS59180515U true JPS59180515U (en) | 1984-12-03 |
Family
ID=30203419
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7329083U Pending JPS59180515U (en) | 1983-05-16 | 1983-05-16 | Signal switching circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59180515U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014116693A (en) * | 2012-12-06 | 2014-06-26 | Rohm Co Ltd | Mixing circuit, and on-vehicle audio apparatus, audio component apparatus and electronic apparatus using the same |
-
1983
- 1983-05-16 JP JP7329083U patent/JPS59180515U/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014116693A (en) * | 2012-12-06 | 2014-06-26 | Rohm Co Ltd | Mixing circuit, and on-vehicle audio apparatus, audio component apparatus and electronic apparatus using the same |
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