JPH01137480U - - Google Patents
Info
- Publication number
- JPH01137480U JPH01137480U JP3477788U JP3477788U JPH01137480U JP H01137480 U JPH01137480 U JP H01137480U JP 3477788 U JP3477788 U JP 3477788U JP 3477788 U JP3477788 U JP 3477788U JP H01137480 U JPH01137480 U JP H01137480U
- Authority
- JP
- Japan
- Prior art keywords
- comparator
- power supply
- supply voltage
- resistor
- output
- 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
- 238000012806 monitoring device Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Measurement Of Current Or Voltage (AREA)
- Emergency Protection Circuit Devices (AREA)
Description
図は本考案に係る電源電圧監視装置の一実施例
を示す図である。
１〜３…コンパレータ、４…オアゲート、Ｒ１
〜Ｒ６…抵抗、ＰＤ１〜ＰＤ３…発光ダイオード
。
The figure is a diagram showing an embodiment of a power supply voltage monitoring device according to the present invention. 1 to 3... Comparator, 4... OR gate, R1
~R6...Resistor, PD1-PD3...Light emitting diode.
Claims (1)
比較するオープン・コレクタ出力のコンパレータ
１と、 このコンパレータの出力端と電源電圧監視装置
の電源ＶＣＣとの間に接続されるランプと抵抗の
直列回路と、 このコンパレータの出力端と回路アースとの間
に接続される抵抗Ｒ４と、 各監視対象の電源ごとに設けられた前記各コン
パレータの出力を導入するオアゲートと、 を備えた電源電圧監視装置。[Claims for Utility Model Registration] A comparator 1 with an open collector output that compares a reference voltage Vr1 and a power supply voltage V1 to be monitored, and a comparator 1 connected between the output terminal of this comparator and a power supply VCC of a power supply voltage monitoring device a series circuit of a lamp and a resistor; a resistor R4 connected between the output terminal of this comparator and the circuit ground; and an OR gate for introducing the output of each comparator provided for each power source to be monitored. Equipped with power supply voltage monitoring device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3477788U JPH01137480U (en) | 1988-03-16 | 1988-03-16 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3477788U JPH01137480U (en) | 1988-03-16 | 1988-03-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01137480U true JPH01137480U (en) | 1989-09-20 |
Family
ID=31261454
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3477788U Pending JPH01137480U (en) | 1988-03-16 | 1988-03-16 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01137480U (en) |
-
1988
- 1988-03-16 JP JP3477788U patent/JPH01137480U/ja active Pending
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