JPS6180465U - - Google Patents
Info
- Publication number
- JPS6180465U JPS6180465U JP16633584U JP16633584U JPS6180465U JP S6180465 U JPS6180465 U JP S6180465U JP 16633584 U JP16633584 U JP 16633584U JP 16633584 U JP16633584 U JP 16633584U JP S6180465 U JPS6180465 U JP S6180465U
- Authority
- JP
- Japan
- Prior art keywords
- terminal
- photocoupler
- resistor
- receiving section
- light receiving
- 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
- 238000001514 detection method Methods 0.000 claims 1
Landscapes
- Measurement Of Current Or Voltage (AREA)
Description
第１図は、本考案の具体的実施例、第２図は従
来例である。
ＰＣ１，ＰＣ２……フオトカプラ、ＺＤ１〜Ｚ
Ｄ６……ツエナーダイオード。
FIG. 1 shows a specific embodiment of the present invention, and FIG. 2 shows a conventional example. PC 1 , PC 2 ... photo coupler, ZD 1 ~Z
D6 ... Zener diode.
Claims (1)
、第１のツエナーダイオードを逆バイアス接続し
、さらにその第１のツエナーダイオードに直列に
第１のフオトカプラの発光部を順バイアス接続し
、さらに直列に第２のフオトカプラの発光部を順
バイアス接続するとともに接地し、その第２のフ
オトカプラの発光部の他端子を第２のツエナーダ
イオードに逆バイアス接続したのち、抵抗を介し
て検出すべき負の第２の電圧（ただし、絶対値は
前記第１の電圧に等しくなるべきもの）端子に接
続するとともに、 検出すべき第３の電圧端子に第３のツエナーダ
イオードを逆バイアス接続し、さらにその第３の
ツエナーダイオードの他端子を第１のフオトカプ
ラの受光部のコレクタ端子に接続し、該受光部の
エミツタ端子を第２のフオトカプラの受光部のコ
レクタ端子に接続し、該受光部のエミツタ端子を
抵抗を介して接地するとともに、該抵抗に接続さ
れる手前から分岐して、正常信号を出力させるこ
とを特徴とする電圧低下検出回路。[Claims for Utility Model Registration] A first Zener diode is connected in reverse bias to a positive first voltage terminal to be detected via a resistor, and a first photocoupler is connected in series with the first Zener diode. After connecting the light emitting part with a forward bias, and further connecting the light emitting part of the second photocoupler in series with a forward bias and grounding it, and connecting the other terminal of the light emitting part of the second photocoupler with a reverse bias to the second Zener diode. , is connected to the negative second voltage terminal (however, the absolute value should be equal to the first voltage) to be detected via a resistor, and a third zener is connected to the third voltage terminal to be detected. The diode is connected with a reverse bias, and the other terminal of the third Zener diode is connected to the collector terminal of the light receiving section of the first photocoupler, and the emitter terminal of the light receiving section is connected to the collector terminal of the light receiving section of the second photocoupler. 1. A voltage drop detection circuit characterized in that the emitter terminal of the light receiving section is grounded via a resistor, and a normal signal is output by branching from this side before being connected to the resistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16633584U JPS6180465U (en) | 1984-10-31 | 1984-10-31 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16633584U JPS6180465U (en) | 1984-10-31 | 1984-10-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6180465U true JPS6180465U (en) | 1986-05-28 |
Family
ID=30724157
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16633584U Pending JPS6180465U (en) | 1984-10-31 | 1984-10-31 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6180465U (en) |
-
1984
- 1984-10-31 JP JP16633584U patent/JPS6180465U/ja active Pending
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