JPS63176377U - - Google Patents
Info
- Publication number
- JPS63176377U JPS63176377U JP6668887U JP6668887U JPS63176377U JP S63176377 U JPS63176377 U JP S63176377U JP 6668887 U JP6668887 U JP 6668887U JP 6668887 U JP6668887 U JP 6668887U JP S63176377 U JPS63176377 U JP S63176377U
- Authority
- JP
- Japan
- Prior art keywords
- main transistor
- detection circuit
- voltage
- circuit
- transistor
- 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
- 238000001514 detection method Methods 0.000 claims description 4
- 238000004804 winding Methods 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
Landscapes
- Protection Of Static Devices (AREA)
- Dc-Dc Converters (AREA)
Description
第１図は、本考案による一実施例を示す回路図
である。第２図は、従来のＲＣＣの過電圧保護回
路例を示す回路構成図である。
１……主トランジスタ、２，４，５，８，２１
，２２，２４，２６……抵抗器、３，９，１４…
…ダイオード、６，１０，１５……コンデンサ、
７……制御トランジスタ、１１……一次巻線、１
２……制御巻線、１３……二次出力巻線、１６…
…過電圧検出回路、１７……絶縁素子、２３……
トランジスタ、２５，２７……定電圧ダイオード
、３１，３２……入力端子、３３，３４……出力
端子。
FIG. 1 is a circuit diagram showing an embodiment of the present invention. FIG. 2 is a circuit configuration diagram showing an example of a conventional RCC overvoltage protection circuit. 1... Main transistor, 2, 4, 5, 8, 21
, 22, 24, 26...Resistor, 3, 9, 14...
...Diode, 6,10,15...Capacitor,
7... Control transistor, 11... Primary winding, 1
2...Control winding, 13...Secondary output winding, 16...
...Overvoltage detection circuit, 17... Insulation element, 23...
Transistor, 25, 27... Constant voltage diode, 31, 32... Input terminal, 33, 34... Output terminal.
Claims (1)
、前記主トランジスタによつて励磁されるトラン
スの主トランジスタのベース駆動用二次巻線に誘
起される逆起電圧を検出する検出回路と、前記検
出回路の出力電圧を基準電圧と比較する比較回路
と、前記比較回路の出力により前記主トランジス
タの動作を制御する制御トランジスタを有するリ
ンギングチヨークコンバータにおいて、上記検出
回路の正電位出力点に定電圧ダイオードのカソー
ドを接続し、前記制御トランジスタのベースに前
記定電圧ダイオードのアノードを接続したことを
特徴とするリンギングチヨークコンバータの過電
圧保護回路。 a detection circuit that detects a back electromotive force induced in a base drive secondary winding of a main transistor of a transformer excited by the main transistor during a non-conducting period of the switching main transistor; and an output of the detection circuit. In a ringing chain converter having a comparison circuit that compares a voltage with a reference voltage and a control transistor that controls the operation of the main transistor based on the output of the comparison circuit, the cathode of a voltage regulator diode is connected to the positive potential output point of the detection circuit. An overvoltage protection circuit for a ringing chain yoke converter, characterized in that the anode of the constant voltage diode is connected to the base of the control transistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6668887U JPH0528948Y2 (en) | 1987-05-01 | 1987-05-01 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6668887U JPH0528948Y2 (en) | 1987-05-01 | 1987-05-01 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63176377U true JPS63176377U (en) | 1988-11-15 |
| JPH0528948Y2 JPH0528948Y2 (en) | 1993-07-26 |
Family
ID=30904928
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6668887U Expired - Lifetime JPH0528948Y2 (en) | 1987-05-01 | 1987-05-01 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0528948Y2 (en) |
-
1987
- 1987-05-01 JP JP6668887U patent/JPH0528948Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0528948Y2 (en) | 1993-07-26 |