JPS5876155U - Overcurrent detection device - Google Patents
Overcurrent detection deviceInfo
- Publication number
- JPS5876155U JPS5876155U JP17069081U JP17069081U JPS5876155U JP S5876155 U JPS5876155 U JP S5876155U JP 17069081 U JP17069081 U JP 17069081U JP 17069081 U JP17069081 U JP 17069081U JP S5876155 U JPS5876155 U JP S5876155U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- voltage
- point level
- overcurrent detection
- capacitor
- 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)
- Devices That Are Associated With Refrigeration Equipment (AREA)
- Emergency Protection Circuit Devices (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図は従来例を示す回路図、第２図はこの考案の実施
例を示す回路図である。
２１・・・交流電源、２３・・・コンプレッサー、２４
・・・抵抗、２５．２９・・・直流電源、２７・・・比
較器、３３・・・直列分圧回路、３７・・・ＣＲ時定数
回路、４０・・・出力回路。FIG. 1 is a circuit diagram showing a conventional example, and FIG. 2 is a circuit diagram showing an embodiment of this invention. 21... AC power supply, 23... Compressor, 24
...Resistor, 25.29...DC power supply, 27...Comparator, 33...Series voltage divider circuit, 37...CR time constant circuit, 40...Output circuit.
Claims (1)
路に直列に介挿されたインピーダンスの小さいインピー
ダンス素子と、直流電源に接続された抵抗分圧回路並び
にＣＲ時定数回路と、上記インピーダンス素子の接続点
レベルと上記抵抗分圧回路の分圧点レベルとを比較し、
上記インピーダンス素子の接続点レベルが上記抵抗分圧
回路の分圧点レベルを越えたとき上記ＣＲ時定数回路の
コンデンサを放電又は充電制御する比較器と、上記ＣＲ
時定数回路のコンデンサの両端間電圧に応動し、そのコ
ンデンサの電圧低下又は電圧上昇を検出して過電流検出
信号を出力する出力回路とを具備してなることを特徴と
する過電流検出装置。A load circuit formed by connecting a load to an AC power supply, an impedance element with low impedance inserted in series with this load circuit, a resistive voltage divider circuit and a CR time constant circuit connected to a DC power supply, and the above impedance element. Compare the connection point level of and the voltage division point level of the resistor voltage divider circuit above,
a comparator that controls discharging or charging of the capacitor of the CR time constant circuit when the connection point level of the impedance element exceeds the voltage division point level of the resistor voltage divider circuit;
An overcurrent detection device comprising: an output circuit that responds to the voltage across a capacitor of a time constant circuit, detects a voltage drop or voltage rise of the capacitor, and outputs an overcurrent detection signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17069081U JPS5876155U (en) | 1981-11-18 | 1981-11-18 | Overcurrent detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17069081U JPS5876155U (en) | 1981-11-18 | 1981-11-18 | Overcurrent detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5876155U true JPS5876155U (en) | 1983-05-23 |
Family
ID=29962638
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17069081U Pending JPS5876155U (en) | 1981-11-18 | 1981-11-18 | Overcurrent detection device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5876155U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012070193A (en) * | 2010-09-22 | 2012-04-05 | Nippon Dempa Kogyo Co Ltd | Oscillator |
-
1981
- 1981-11-18 JP JP17069081U patent/JPS5876155U/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012070193A (en) * | 2010-09-22 | 2012-04-05 | Nippon Dempa Kogyo Co Ltd | Oscillator |
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