JPS6270689U - - Google Patents
Info
- Publication number
- JPS6270689U JPS6270689U JP16255885U JP16255885U JPS6270689U JP S6270689 U JPS6270689 U JP S6270689U JP 16255885 U JP16255885 U JP 16255885U JP 16255885 U JP16255885 U JP 16255885U JP S6270689 U JPS6270689 U JP S6270689U
- Authority
- JP
- Japan
- Prior art keywords
- transistor
- switching transistor
- control
- resistor
- voltage
- 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
- Protection Of Static Devices (AREA)
- Dc-Dc Converters (AREA)
Description
第１図、第２図および第３図は本考案実施例装
置の構成を示す回路接続図。第４図は従来例装置
の構成を示す回路接続図。
１……入力電源、２，５，１５，１９，２２，
３１，３３……コンデンサ、３……トランス、４
，１１，２７，３２……ダイオード、６……スイ
ツチングトランジスタ、１０，１３，２５……ト
ランジスタ、７，８，９，１２，１４，１６，１
７，２３，２６，２９，３０……抵抗器、１８…
…ＰＷＭ制御回路、２０……制御電源、２１……
誤差増幅回路、２４……サイリスタ、２８……動
作停止信号送出回路、３４……過電流検出回路、
３５……コンバータ動作停止信号出力端子。
FIGS. 1, 2, and 3 are circuit connection diagrams showing the configuration of an apparatus according to an embodiment of the present invention. FIG. 4 is a circuit connection diagram showing the configuration of a conventional device. 1...Input power supply, 2, 5, 15, 19, 22,
31, 33... Capacitor, 3... Transformer, 4
, 11, 27, 32... Diode, 6... Switching transistor, 10, 13, 25... Transistor, 7, 8, 9, 12, 14, 16, 1
7, 23, 26, 29, 30...Resistor, 18...
...PWM control circuit, 20 ... control power supply, 21 ...
Error amplification circuit, 24...thyristor, 28...operation stop signal sending circuit, 34...overcurrent detection circuit,
35...Converter operation stop signal output terminal.
Claims (1)
され、入力直流電源の通路に挿入されたスイツチ
ングトランジスタ６と、 このスイツチングトランジスタに直列に挿入さ
れた抵抗７と、 この抵抗に発生する電圧が制御入力に接続され
この電圧が大きいときに上記スイツチングトラン
ジスタの制御電極に電流を制限する電圧を与える
トランジスタ１０と を備えた直流―直流コンバータにおいて、 上記トランジスタの出力電極から制御電極に、
遅延回路１４，１５，１６を含む正帰還が施され
た ことを特徴とする直流―直流コンバータ。[Claims for Utility Model Registration] A switching transistor 6 whose control terminal is connected to the output of the pulse width modulation control circuit and inserted into the path of the input DC power supply, and a resistor 7 inserted in series with the switching transistor. , and a transistor 10 to which the voltage generated in this resistor is connected to a control input and which applies a current-limiting voltage to the control electrode of the switching transistor when this voltage is large, the output of the transistor from the electrode to the control electrode,
A DC-DC converter characterized by being provided with positive feedback including delay circuits 14, 15, and 16.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16255885U JPS6270689U (en) | 1985-10-22 | 1985-10-22 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16255885U JPS6270689U (en) | 1985-10-22 | 1985-10-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6270689U true JPS6270689U (en) | 1987-05-06 |
Family
ID=31089933
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16255885U Pending JPS6270689U (en) | 1985-10-22 | 1985-10-22 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6270689U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0274123A (en) * | 1988-09-09 | 1990-03-14 | Fujitsu Ltd | Overcurrent protective system |
-
1985
- 1985-10-22 JP JP16255885U patent/JPS6270689U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0274123A (en) * | 1988-09-09 | 1990-03-14 | Fujitsu Ltd | Overcurrent protective system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH0357712B2 (en) | ||
| JP2638625B2 (en) | MOS-FET gate drive circuit | |
| JPS63179781U (en) | ||
| JPS6270689U (en) | ||
| JPH03113986U (en) | ||
| JPS59161394U (en) | Overcurrent protection device for power switch elements in switching power supplies | |
| JPS62104588U (en) | ||
| JPS627779U (en) | ||
| JPS6244637U (en) | ||
| JPS59155884U (en) | Protection circuit for switching control type power supply equipment | |
| JPS6437387U (en) | ||
| JPS6214982U (en) | ||
| JPH01190261A (en) | Switching power supply device | |
| JPS5857291U (en) | DC-DC converter | |
| JPH0210784U (en) | ||
| JPH0425477U (en) | ||
| JPH01134987U (en) | ||
| JPS59149483U (en) | Overcurrent protection circuit | |
| JPS5844614U (en) | Current feedback transistor switching circuit | |
| JPH0171989U (en) | ||
| JPS63100993U (en) | ||
| JPS63202183U (en) | ||
| JPS62161587U (en) | ||
| JPS6351586U (en) | ||
| JPS59168716A (en) | Pulse generating and converting circuit |