JPS6043014U - electronic switching circuit - Google Patents
electronic switching circuitInfo
- Publication number
- JPS6043014U JPS6043014U JP13470583U JP13470583U JPS6043014U JP S6043014 U JPS6043014 U JP S6043014U JP 13470583 U JP13470583 U JP 13470583U JP 13470583 U JP13470583 U JP 13470583U JP S6043014 U JPS6043014 U JP S6043014U
- Authority
- JP
- Japan
- Prior art keywords
- electronic switching
- switching circuit
- constant current
- output terminal
- amplifiers
- 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) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は本考案の一実施例によるミューティング付電子
切換回路の回路図を示したものであり、第２図はそのタ
イミングチャートを示したものである。
１・・・増幅器、１，２・・・増幅器１の入力差動段定
電流回路、３・・・増幅器２．５・・・増幅器２の入力
差動段定電流回路、４，６，７，１７．１８・・・スイ
ッチ用トランジスタ、８〜１０・・・定電流源、１１〜
１３・・・電位差設定用ダイオード、１４・・・切換ス
イッチ、１５・・・電源端子、１６・・・切換端子、１
９・・・ミュート出力用トランジスタ、２０・・・電流
制限用抵抗、２１・・・バイアス用ダイオード、２２・
・・ミュート出力端子、２３・・・共通出力端子、２４
・・・ミュート用トランジスタ、２５・・・時定数用コ
ンデンサ、２６．２７・・・時定数用抵抗、２８・−・
直流阻止コンデンサ、２９・・・ミューティング用抵抗
。FIG. 1 shows a circuit diagram of an electronic switching circuit with muting according to an embodiment of the present invention, and FIG. 2 shows a timing chart thereof. DESCRIPTION OF SYMBOLS 1... Amplifier, 1, 2... Input differential stage constant current circuit of amplifier 1, 3... Amplifier 2.5... Input differential stage constant current circuit of amplifier 2, 4, 6, 7 , 17.18... Switch transistor, 8-10... Constant current source, 11-
13... Potential difference setting diode, 14... Selector switch, 15... Power supply terminal, 16... Switching terminal, 1
9... Transistor for mute output, 20... Resistor for current limiting, 21... Diode for bias, 22...
...Mute output terminal, 23...Common output terminal, 24
... Transistor for mute, 25... Capacitor for time constant, 26.27... Resistor for time constant, 28...
DC blocking capacitor, 29...muting resistor.
Claims (1)
路を選択的に動作せしめることにより複数個の増幅器の
動作状態を選択する電子切換回路において、前記各定電
流回路を切換スイッチによつ′ て変化する電圧
で選択し、この変化する電圧の変化の一定の電圧範囲に
おいてのみ前記共通出力端に接続されるミューティング
回路を動作せしめることにより切換時に発生するポツプ
ノイズを出力せしめないようにしたことを特徴とした電
子切換回路。- In an electronic switching circuit that selects the operating state of a plurality of amplifiers by selectively operating the constant current circuit of each of the plurality of amplifiers having a common output terminal, each of the constant current circuits is controlled by a changeover switch. ′ is selected based on the changing voltage, and the muting circuit connected to the common output terminal is operated only within a certain voltage range of the changing voltage, thereby preventing pop noise generated at the time of switching from being output. An electronic switching circuit characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13470583U JPS6043014U (en) | 1983-08-31 | 1983-08-31 | electronic switching circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13470583U JPS6043014U (en) | 1983-08-31 | 1983-08-31 | electronic switching circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6043014U true JPS6043014U (en) | 1985-03-26 |
Family
ID=30303445
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13470583U Pending JPS6043014U (en) | 1983-08-31 | 1983-08-31 | electronic switching circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6043014U (en) |
-
1983
- 1983-08-31 JP JP13470583U patent/JPS6043014U/en active Pending
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