JPS58140475U - voltage detection circuit - Google Patents
voltage detection circuitInfo
- Publication number
- JPS58140475U JPS58140475U JP3851282U JP3851282U JPS58140475U JP S58140475 U JPS58140475 U JP S58140475U JP 3851282 U JP3851282 U JP 3851282U JP 3851282 U JP3851282 U JP 3851282U JP S58140475 U JPS58140475 U JP S58140475U
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- output
- detection circuit
- voltage detection
- reference voltage
- 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.)
- Granted
Links
Landscapes
- Emergency Protection Circuit Devices (AREA)
- 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図は従来の電圧検出回路の回路図、第２図は不考案
の一実施例を示す回路図であり、第３図 ′は第２
図回路の動作説明の為の概略波形図である。
主な図番の説明、Ｃｍ・・・電圧比較器、Ｒ，、Ｒ１□
・・・抵抗（帰還回路）、Ｑ□・・・トランジスタ（可
変インピーダンス素子）、Ｄ２・・・発光ダイオード、
Ｒ□３．Ｃ０・・・抵抗及びコンデンサー（積分回路）
。Figure 1 is a circuit diagram of a conventional voltage detection circuit, Figure 2 is a circuit diagram showing an unconventional embodiment, and Figure 3' is a circuit diagram of a conventional voltage detection circuit.
FIG. 2 is a schematic waveform diagram for explaining the operation of the circuit shown in FIG. Explanation of main drawing numbers, Cm...voltage comparator, R,, R1□
...Resistor (feedback circuit), Q□...Transistor (variable impedance element), D2...Light emitting diode,
R□3. C0...Resistance and capacitor (integrator circuit)
.
Claims (1)
比較電圧より大のときに前記出力がハイレベルとなる電
圧比較器と、 前記出力を前記基準電圧入力に電圧帰還する帰還回路と
、 前記出力の電圧を積分する積分回路と、該積分回路の出
力電圧上昇に応じてインピーダンスの低下する可変イン
ピーダンス素子であって、前記基準電圧入力を側路する
可変インピーダンス素子とを備え、 前記比較器出力の振動を電圧低下信号として利用する電
圧検出回路。[Claims for Utility Model Registration] A voltage comparator comprising a reference voltage input, a comparison voltage input, and an output, the output of which is at a high level when the reference voltage is greater than the comparison voltage, and the output is connected to the reference voltage input. a feedback circuit that performs voltage feedback; an integrator circuit that integrates the voltage of the output; and a variable impedance element whose impedance decreases as the output voltage of the integrator circuit increases, the variable impedance element bypassing the reference voltage input. A voltage detection circuit, comprising: using the vibration of the comparator output as a voltage drop signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3851282U JPS58140475U (en) | 1982-03-17 | 1982-03-17 | voltage detection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3851282U JPS58140475U (en) | 1982-03-17 | 1982-03-17 | voltage detection circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58140475U true JPS58140475U (en) | 1983-09-21 |
| JPH0311744Y2 JPH0311744Y2 (en) | 1991-03-20 |
Family
ID=30049846
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3851282U Granted JPS58140475U (en) | 1982-03-17 | 1982-03-17 | voltage detection circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58140475U (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5124860A (en) * | 1974-08-24 | 1976-02-28 | Nippon Denso Co | |
| JPS568334U (en) * | 1979-06-29 | 1981-01-24 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52130648A (en) * | 1976-04-27 | 1977-11-02 | Nippon Telegr & Teleph Corp <Ntt> | Directional photo-coupler |
-
1982
- 1982-03-17 JP JP3851282U patent/JPS58140475U/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5124860A (en) * | 1974-08-24 | 1976-02-28 | Nippon Denso Co | |
| JPS568334U (en) * | 1979-06-29 | 1981-01-24 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0311744Y2 (en) | 1991-03-20 |
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