JPH01137479U - - Google Patents
Info
- Publication number
- JPH01137479U JPH01137479U JP3470388U JP3470388U JPH01137479U JP H01137479 U JPH01137479 U JP H01137479U JP 3470388 U JP3470388 U JP 3470388U JP 3470388 U JP3470388 U JP 3470388U JP H01137479 U JPH01137479 U JP H01137479U
- Authority
- JP
- Japan
- Prior art keywords
- resistor
- transistor
- emitter
- detection circuit
- transformer
- 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
- 238000006243 chemical reaction Methods 0.000 claims 1
- 238000004804 winding Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
Description
第１図は本考案の一実施例の回路図、第２図は
従来の過電流検出回路の回路図である。
１……平滑コンデンサ、２……変圧器、３……
スイツチ、４……整流回路、５……制御回路、６
，８，９，１０……抵抗器、７……トランジスタ
、１１……破壊防止用抵抗器。
FIG. 1 is a circuit diagram of an embodiment of the present invention, and FIG. 2 is a circuit diagram of a conventional overcurrent detection circuit. 1... Smoothing capacitor, 2... Transformer, 3...
Switch, 4... Rectifier circuit, 5... Control circuit, 6
, 8, 9, 10...Resistor, 7...Transistor, 11...Destruction prevention resistor.
Claims (1)
う変圧器の一次巻線に直列に第一の抵抗器を接続
し、トランジスタのエミツタを前記第一の抵抗器
の電源側の端子に接続し、前記トランジスタのベ
ースを前記第一の抵抗器の変圧器側の端子に接続
する過電流検出回路において、前記エミツタと前
記第一の抵抗器の電源側の端子との間に第二の抵
抗器を挿入することを特徴とする過電流検出回路
。 A first resistor is connected in series to the primary winding of a transformer that performs voltage conversion used in a DC-DC converter, the emitter of a transistor is connected to a terminal on the power supply side of the first resistor, and the transistor In the overcurrent detection circuit, the base of which is connected to the transformer side terminal of the first resistor, a second resistor is inserted between the emitter and the power supply side terminal of the first resistor. An overcurrent detection circuit characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3470388U JPH01137479U (en) | 1988-03-15 | 1988-03-15 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3470388U JPH01137479U (en) | 1988-03-15 | 1988-03-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01137479U true JPH01137479U (en) | 1989-09-20 |
Family
ID=31261382
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3470388U Pending JPH01137479U (en) | 1988-03-15 | 1988-03-15 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01137479U (en) |
-
1988
- 1988-03-15 JP JP3470388U patent/JPH01137479U/ja active Pending