JPS6446761U - - Google Patents
Info
- Publication number
- JPS6446761U JPS6446761U JP13997787U JP13997787U JPS6446761U JP S6446761 U JPS6446761 U JP S6446761U JP 13997787 U JP13997787 U JP 13997787U JP 13997787 U JP13997787 U JP 13997787U JP S6446761 U JPS6446761 U JP S6446761U
- Authority
- JP
- Japan
- Prior art keywords
- capacitor
- voltage
- current detector
- reference voltage
- overcurrent 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.)
- Granted
Links
- 239000003990 capacitor Substances 0.000 claims description 5
- 238000001514 detection method Methods 0.000 claims description 5
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Measurement Of Current Or Voltage (AREA)
Description
第１図は本考案に係る過電流検出回路の一実施
例を示す回路図、第２図は本実施例回路の作用を
従来例回路との比較において説明するための特性
図、第３図は従来の過電流検出回路を示す回路図
である。
１……導電ライン、２……電流検出器、７……
コンデンサ、１０……コンパレータ、１４……充
電回路。
Fig. 1 is a circuit diagram showing an embodiment of the overcurrent detection circuit according to the present invention, Fig. 2 is a characteristic diagram for explaining the operation of the circuit of this embodiment in comparison with a conventional circuit. FIG. 2 is a circuit diagram showing a conventional overcurrent detection circuit. 1... Conductive line, 2... Current detector, 7...
Capacitor, 10... comparator, 14... charging circuit.
Claims (1)
と、この電流検出器の検出出力を平滑するコンデ
ンサと、このコンデンサの端子電圧が基準電圧を
越えた場合に過電流検出信号を出力するコンパレ
ータとを有する過電流検出回路において、該基準
電圧より若干低めの電圧を該コンデンサに常時印
加することで該コンデンサを充電する充電回路を
具備することを特徴とする過電流検出回路。 It has a current detector that detects the current flowing in the conductive line, a capacitor that smoothes the detection output of this current detector, and a comparator that outputs an overcurrent detection signal when the terminal voltage of this capacitor exceeds a reference voltage. An overcurrent detection circuit comprising a charging circuit that charges the capacitor by constantly applying a voltage slightly lower than the reference voltage to the capacitor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987139977U JPH074593Y2 (en) | 1987-09-16 | 1987-09-16 | Overcurrent detection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987139977U JPH074593Y2 (en) | 1987-09-16 | 1987-09-16 | Overcurrent detection circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6446761U true JPS6446761U (en) | 1989-03-22 |
| JPH074593Y2 JPH074593Y2 (en) | 1995-02-01 |
Family
ID=31403729
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987139977U Expired - Lifetime JPH074593Y2 (en) | 1987-09-16 | 1987-09-16 | Overcurrent detection circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH074593Y2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54108937U (en) * | 1978-01-19 | 1979-07-31 |
-
1987
- 1987-09-16 JP JP1987139977U patent/JPH074593Y2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54108937U (en) * | 1978-01-19 | 1979-07-31 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH074593Y2 (en) | 1995-02-01 |
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