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
Application number
JP16633584U
Other languages
Japanese (ja)
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP16633584U priority Critical patent/JPS6180465U/ja
Publication of JPS6180465U publication Critical patent/JPS6180465U/ja
Pending legal-status Critical Current

Links

Landscapes

  • Measurement Of Current Or Voltage (AREA)

Description

【図面の簡単な説明】[Brief explanation of drawings]

第1図は、本考案の具体的実施例、第2図は従
来例である。 PC,PC……フオトカプラ、ZD〜Z
……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)

【実用新案登録請求の範囲】 検出すべき正の第1の電圧端子に抵抗を介して
、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.
JP16633584U 1984-10-31 1984-10-31 Pending JPS6180465U (en)

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)

Similar Documents

Publication Publication Date Title
JPS6180465U (en)
JPS6244520U (en)
JPS60124126U (en) Phototransistor voltage output circuit
JPH0141253Y2 (en)
JPS6257447U (en)
JPS60169587U (en) sensor circuit
JPS60172453U (en) Modulated light receiver circuit
JPS61119422U (en)
JPS63195267U (en)
JPS59144475U (en) voltage detection circuit
JPS6355644U (en)
JPS62151238U (en)
JPH022675U (en)
JPS61119440U (en)
JPS6224538U (en)
JPS6257470U (en)
JPH01146168U (en)
JPS61170125U (en)
JPS6199218U (en)
JPS63158031U (en)
JPS6190308U (en)
JPS59187249U (en) optical digital signal receiver
JPS6370234U (en)
JPH0193749U (en)
JPS628727U (en)