JPS60151237U - Power switching circuit - Google Patents
Power switching circuitInfo
- Publication number
- JPS60151237U JPS60151237U JP3800784U JP3800784U JPS60151237U JP S60151237 U JPS60151237 U JP S60151237U JP 3800784 U JP3800784 U JP 3800784U JP 3800784 U JP3800784 U JP 3800784U JP S60151237 U JPS60151237 U JP S60151237U
- Authority
- JP
- Japan
- Prior art keywords
- power supply
- transistor
- whose
- connection point
- 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
- Electronic Switches (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図は従来の電源切換回路の一例を示す回路図、第２
図は本考案の電源切換回路の一実施例を示す回路図であ
る。
８・・・制御用トランジスタ、１１・・・入力端子、１
３．１５・・・出力端子、１６・・・受信回路用トラン
ジスタ、２０・・・ツェナーダイオード、２１・・・送
信回路用トランジスタ、２２・・・制御電圧入力端子、
２３・・・＋５■安定化回路。Figure 1 is a circuit diagram showing an example of a conventional power supply switching circuit;
The figure is a circuit diagram showing an embodiment of the power supply switching circuit of the present invention. 8... Control transistor, 11... Input terminal, 1
3.15... Output terminal, 16... Transistor for receiving circuit, 20... Zener diode, 21... Transistor for transmitting circuit, 22... Control voltage input terminal,
23...+5■ Stabilization circuit.
Claims (2)
コレクタ側が第１の電源端子となっているＰＮＰ＃ ト
ランジスタと、前記ＰＮＰ形トランジスタのベースとそ
のベースとが接続され、かつコレクタが前記電源に、エ
ミッタ側が第２の電源端子となっているＮＰＮ形トラン
ジスタと、前記両トランジスタのベース間接続点に前記
電源電圧を接続する手段と、前記接続点とアース間に接
続され、送信用の制御電圧が印加された時にオフ、受信
用の制御電圧が印加された時にオンとなるスイッチング
手段と、前記接続点とスイッチング手段間にカソードが
接続され、かつアノードが接地されたツェナーダイオー
ドとを具備したことを特徴とする電源切換回路。(1) The emitter is connected to the power supply via a stabilization circuit,
A PNP # transistor whose collector side is the first power supply terminal, and an NPN transistor whose base is connected to the base of the PNP transistor, whose collector is the power supply terminal, and whose emitter side is the second power supply terminal. a transistor, a means for connecting the power supply voltage to a connection point between the bases of both transistors, and a means connected between the connection point and ground, which is turned off when a control voltage for transmission is applied, and is turned off when a control voltage for reception is applied. 1. A power supply switching circuit comprising: switching means that turns on when the connection point is turned on; and a Zener diode whose cathode is connected between the connection point and the switching means and whose anode is grounded.
を特徴とする前記実用新案登録請求の範囲第１項記載の
電源切換回路。(2) The power supply switching circuit according to claim 1, wherein the switching means is a transistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3800784U JPS60151237U (en) | 1984-03-19 | 1984-03-19 | Power switching circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3800784U JPS60151237U (en) | 1984-03-19 | 1984-03-19 | Power switching circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60151237U true JPS60151237U (en) | 1985-10-08 |
Family
ID=30544611
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3800784U Pending JPS60151237U (en) | 1984-03-19 | 1984-03-19 | Power switching circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60151237U (en) |
-
1984
- 1984-03-19 JP JP3800784U patent/JPS60151237U/en active Pending
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