JPS5819317U - Current limit protection circuit - Google Patents
Current limit protection circuitInfo
- Publication number
- JPS5819317U JPS5819317U JP11155481U JP11155481U JPS5819317U JP S5819317 U JPS5819317 U JP S5819317U JP 11155481 U JP11155481 U JP 11155481U JP 11155481 U JP11155481 U JP 11155481U JP S5819317 U JPS5819317 U JP S5819317U
- Authority
- JP
- Japan
- Prior art keywords
- protection circuit
- current limit
- limit protection
- load side
- overload current
- 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
- Emergency Protection Circuit Devices (AREA)
- Continuous-Control Power Sources That Use Transistors (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) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は従来の電流制限保護回路の回路図、第２図は本
考案の一実施例の電流制限回路のブロック図、第３図は
第２図の回路図である。
図中、１は電源端子、２は負荷側端子、３は電流検出器
、４は電圧回路、５はタイマ回路、６は制御回路、７は
時定数回路、８はタイマ電源、Ｑ□は制御トランジスタ
、Ｑ２は負荷電圧検出トランジスタ、Ｑ３は電流検出ト
ランジスタ、Ｑ４はチャック監視トランジスタ、Ｑ５は
時定数トランジスタ、Ｑ６はタイマ完了信号送出トラン
ジスタである。FIG. 1 is a circuit diagram of a conventional current limit protection circuit, FIG. 2 is a block diagram of a current limit circuit according to an embodiment of the present invention, and FIG. 3 is a circuit diagram of FIG. In the figure, 1 is a power supply terminal, 2 is a load side terminal, 3 is a current detector, 4 is a voltage circuit, 5 is a timer circuit, 6 is a control circuit, 7 is a time constant circuit, 8 is a timer power supply, and Q□ is a control Q2 is a load voltage detection transistor, Q3 is a current detection transistor, Q4 is a chuck monitoring transistor, Q5 is a time constant transistor, and Q6 is a timer completion signal sending transistor.
Claims (1)
の過負荷電流を検出する過負荷電流検出手段と、該過負
荷電流検出手段により過負荷電流が検出された経過時間
を計数する時間計数手段とを備え、該時間計数手段で得
た計数時間に応じて負荷側に供給された直流電源を遮断
するようなされたことを特徴とする電流制限保護回路。In a power supply circuit that supplies DC power to a load side, overload current detection means detects an overload current on the load side, and time counting means counts the elapsed time during which the overload current is detected by the overload current detection means. 1. A current limiting protection circuit comprising: a current limiting protection circuit which cuts off a DC power supply supplied to a load side according to the counted time obtained by the time counting means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11155481U JPS5819317U (en) | 1981-07-29 | 1981-07-29 | Current limit protection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11155481U JPS5819317U (en) | 1981-07-29 | 1981-07-29 | Current limit protection circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5819317U true JPS5819317U (en) | 1983-02-05 |
Family
ID=29905895
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11155481U Pending JPS5819317U (en) | 1981-07-29 | 1981-07-29 | Current limit protection circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5819317U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01159539U (en) * | 1988-04-20 | 1989-11-06 |
-
1981
- 1981-07-29 JP JP11155481U patent/JPS5819317U/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01159539U (en) * | 1988-04-20 | 1989-11-06 |
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