JPS62146213U - - Google Patents
Info
- Publication number
- JPS62146213U JPS62146213U JP2797686U JP2797686U JPS62146213U JP S62146213 U JPS62146213 U JP S62146213U JP 2797686 U JP2797686 U JP 2797686U JP 2797686 U JP2797686 U JP 2797686U JP S62146213 U JPS62146213 U JP S62146213U
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- power supply
- circuit
- comparator
- voltage dividing
- 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
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Control Of Voltage And Current In General (AREA)
Description
第１図は本考案の一実施例回路図、第２図は一
従来例の回路図である。
図中、１は第１の比較器、２は第２の比較器、
Ｒ１１〜Ｒ１４は抵抗器、ＺＤはツエナダイオー
ド、である。
FIG. 1 is a circuit diagram of an embodiment of the present invention, and FIG. 2 is a circuit diagram of a conventional example. In the figure, 1 is the first comparator, 2 is the second comparator,
R11 to R14 are resistors, and ZD is a Zener diode.
Claims (1)
器と、電源電圧が低電圧になつたことを検出する
ための第２の比較器とを備えた電源回路において
、 上記両比較器の基準電圧入力には同一の基準電
圧源を共通に接続するとともに、上記電源電圧と
接地電位との間を３分割する分圧回路を設け、上
記第１の比較器の被比較入力には上記分圧回路の
接地側の分圧点を接続し、上記第２の比較器の被
比較入力には上記分圧回路の電源側の分圧点を接
続したことを特徴とする電源回路の低電圧検出回
路。[Claims for Utility Model Registration] A power supply circuit comprising a first comparator for controlling the power supply voltage to a constant voltage and a second comparator for detecting that the power supply voltage has become a low voltage. In this case, the same reference voltage source is commonly connected to the reference voltage inputs of both of the comparators, and a voltage dividing circuit that divides the power supply voltage and the ground potential into three is provided. The voltage dividing point on the ground side of the voltage dividing circuit is connected to the input to be compared, and the voltage dividing point on the power supply side of the voltage dividing circuit is connected to the input to be compared of the second comparator. Low voltage detection circuit for power supply circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2797686U JPS62146213U (en) | 1986-02-27 | 1986-02-27 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2797686U JPS62146213U (en) | 1986-02-27 | 1986-02-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62146213U true JPS62146213U (en) | 1987-09-16 |
Family
ID=30830512
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2797686U Pending JPS62146213U (en) | 1986-02-27 | 1986-02-27 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62146213U (en) |
-
1986
- 1986-02-27 JP JP2797686U patent/JPS62146213U/ja active Pending