JPS60192533U - switch detection circuit - Google Patents
switch detection circuitInfo
- Publication number
- JPS60192533U JPS60192533U JP7936584U JP7936584U JPS60192533U JP S60192533 U JPS60192533 U JP S60192533U JP 7936584 U JP7936584 U JP 7936584U JP 7936584 U JP7936584 U JP 7936584U JP S60192533 U JPS60192533 U JP S60192533U
- Authority
- JP
- Japan
- Prior art keywords
- transistor
- power supply
- supply line
- switched power
- detection 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図は本考案の一実施例を示す回路図、第２図は第１
図の回路の動作を説明するための波形図、第３図は本考
案の他の実施例を示す回路図、第４図は従来例を示す回
路図、及び第５図は第４図の回路の動作を説明するため
の波形図である。
１０・・・ＰＮＰ トランジスタ、１２・・・ＮＰＮト
ランジスタ、１４・・・ダイオード、１６・・・電源ス
ィッチ。Fig. 1 is a circuit diagram showing one embodiment of the present invention, and Fig. 2 is a circuit diagram showing an embodiment of the present invention.
3 is a circuit diagram showing another embodiment of the present invention, FIG. 4 is a circuit diagram showing a conventional example, and FIG. 5 is the circuit shown in FIG. 4. FIG. 2 is a waveform diagram for explaining the operation of FIG. 10...PNP transistor, 12...NPN transistor, 14...diode, 16...power switch.
Claims (1)
クタ通路を接続した第１のトランジスタと、スイッチド
電源ラインにベースを、エミッタコレクタ通路を前記第
１のトランジスタのベース゛ とアース間に接続した
前記第１のトランジスタと反対導電型の第２のトランジ
スタと、前記スイッチド電源ラインと前記第１のトラン
ジスタとの間に、前記スイッチド電源ラインの電位の絶
対値が所定電位以下になるまで前記第１のトランジスタ
をオフさせるように接続したダイオードとを備え、前記
ノンスイッチド電源ラインと前記スイツチド電源ライン
との間に設けたスイッチのオフ時罎こ前記出力にパルス
を発生することを特徴とするスイッチ検出回路。a first transistor having an emitter-collector path connected between the unswitched power supply line and the output; and a first transistor having a base connected to the switched power supply line and an emitter-collector path connected between the base of the first transistor and ground. A second transistor having a conductivity type opposite to that of the first transistor is connected between the switched power supply line and the first transistor until the absolute value of the potential of the switched power supply line becomes equal to or less than a predetermined potential. and a diode connected to turn off the transistor, and generates a pulse in the output when the switch provided between the non-switched power supply line and the switched power supply line is turned off. detection circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7936584U JPS60192533U (en) | 1984-05-31 | 1984-05-31 | switch detection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7936584U JPS60192533U (en) | 1984-05-31 | 1984-05-31 | switch detection circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60192533U true JPS60192533U (en) | 1985-12-20 |
Family
ID=30624208
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7936584U Pending JPS60192533U (en) | 1984-05-31 | 1984-05-31 | switch detection circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60192533U (en) |
-
1984
- 1984-05-31 JP JP7936584U patent/JPS60192533U/en active Pending
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