JPH0423332U - - Google Patents
Info
- Publication number
- JPH0423332U JPH0423332U JP6384890U JP6384890U JPH0423332U JP H0423332 U JPH0423332 U JP H0423332U JP 6384890 U JP6384890 U JP 6384890U JP 6384890 U JP6384890 U JP 6384890U JP H0423332 U JPH0423332 U JP H0423332U
- Authority
- JP
- Japan
- Prior art keywords
- driving transistor
- transistor
- circuit
- current
- terminals
- 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
- 238000001514 detection method Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Electronic Switches (AREA)
Description
第１図は本考案の実施例に係るカレントリミツ
ト回路の構成を示す回路図、第２図は従来のカレ
ントリミツト回路の構成を示す回路図である。
Ｑ１……駆動用パワートランジスタ、Ｑ５……
電流検出用トランジスタ、Ｑ２，Ｑ３，Ｑ４，Ｑ
６，Ｑ７……トランジスタ、Ｒ１……過電流検出
用抵抗、Ｒ２……負荷抵抗、Ｒ３，Ｒ４，Ｒ５，
Ｒ６……抵抗。
FIG. 1 is a circuit diagram showing the configuration of a current limit circuit according to an embodiment of the present invention, and FIG. 2 is a circuit diagram showing the configuration of a conventional current limit circuit. Q1... Drive power transistor, Q5...
Current detection transistor, Q2, Q3, Q4, Q
6, Q7...Transistor, R1...Resistor for overcurrent detection, R2...Load resistance, R3, R4, R5,
R6...Resistance.
Claims (1)
ントリミツト回路において、上記駆動用トランジ
スタの端子間の電圧から駆動用トランジスタを流
れる電流を検出する電流検出用トランジスタを設
けたことを特徴とするカレントリミツト回路。 A current limit circuit for preventing overcurrent to a driving transistor, characterized in that a current detection transistor is provided for detecting a current flowing through the driving transistor from a voltage between terminals of the driving transistor. circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6384890U JPH0423332U (en) | 1990-06-16 | 1990-06-16 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6384890U JPH0423332U (en) | 1990-06-16 | 1990-06-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0423332U true JPH0423332U (en) | 1992-02-26 |
Family
ID=31594263
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6384890U Pending JPH0423332U (en) | 1990-06-16 | 1990-06-16 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0423332U (en) |
-
1990
- 1990-06-16 JP JP6384890U patent/JPH0423332U/ja active Pending
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