JPS60152967U - Power supply voltage drop detection circuit - Google Patents
Power supply voltage drop detection circuitInfo
- Publication number
- JPS60152967U JPS60152967U JP4031684U JP4031684U JPS60152967U JP S60152967 U JPS60152967 U JP S60152967U JP 4031684 U JP4031684 U JP 4031684U JP 4031684 U JP4031684 U JP 4031684U JP S60152967 U JPS60152967 U JP S60152967U
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- power supply
- supply voltage
- detection circuit
- drop detection
- 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
- Measurement Of Current Or Voltage (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) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は従来の電源電圧降下検出回路の一例を示す回路
図、第２図、第３図は第１図に示す回路の動作を説明す
るための特性図、第４図は本考案による電源電圧降下検
出回路の一実施例を示す回路図、第５図は第４図に示す
回路の動作を説明するための特性図である。
１、 ２．４． ５． ６．８． ９・・・抵抗、３・
・・コンパレータ、７・・・出力端、１０・・・ツェナ
ーダイオード。
第４図
第５図
−“ｊ
ＶＡＡ２ ＶＡＡFigure 1 is a circuit diagram showing an example of a conventional power supply voltage drop detection circuit, Figures 2 and 3 are characteristic diagrams for explaining the operation of the circuit shown in Figure 1, and Figure 4 is a power supply according to the present invention. FIG. 5 is a circuit diagram showing one embodiment of the voltage drop detection circuit, and FIG. 5 is a characteristic diagram for explaining the operation of the circuit shown in FIG. 4. 1, 2.4. 5. 6.8. 9...Resistance, 3.
... Comparator, 7... Output end, 10... Zener diode. Figure 4 Figure 5 - “j VAA2 VAA
Claims (1)
、第２抵抗と、前記電源電圧を入力とする三端子レギュ
レータから出力される安定化電源をツェナーダイオード
に供給する電流制限用の第３抵抗と、前記ツェナーダイ
オードの両端電圧を分圧することにより基準電圧を発生
する第４、第５抵抗の直列体と、前記比較電圧が前記基
準電圧よりも低下した時にリセット信号を発生するコン
パレータとを設けたことを特徴とする電源電圧降下検出
回路。The first voltage generator generates a comparison voltage by dividing the power supply voltage.
, a second resistor, a third resistor for current limiting that supplies the Zener diode with the stabilized power output from the three-terminal regulator that receives the power supply voltage as input, and a reference voltage by dividing the voltage across the Zener diode. A power supply voltage drop detection circuit comprising: a series body of fourth and fifth resistors that generate a voltage; and a comparator that generates a reset signal when the comparison voltage falls below the reference voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4031684U JPS60152967U (en) | 1984-03-21 | 1984-03-21 | Power supply voltage drop detection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4031684U JPS60152967U (en) | 1984-03-21 | 1984-03-21 | Power supply voltage drop detection circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60152967U true JPS60152967U (en) | 1985-10-11 |
Family
ID=30549088
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4031684U Pending JPS60152967U (en) | 1984-03-21 | 1984-03-21 | Power supply voltage drop detection circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60152967U (en) |
-
1984
- 1984-03-21 JP JP4031684U patent/JPS60152967U/en active Pending
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