JPS61134687U - - Google Patents
Info
- Publication number
- JPS61134687U JPS61134687U JP1544985U JP1544985U JPS61134687U JP S61134687 U JPS61134687 U JP S61134687U JP 1544985 U JP1544985 U JP 1544985U JP 1544985 U JP1544985 U JP 1544985U JP S61134687 U JPS61134687 U JP S61134687U
- Authority
- JP
- Japan
- Prior art keywords
- transformer
- switching transistor
- circuit
- photothyristor
- winding
- 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
- 238000004804 winding Methods 0.000 claims description 7
- 238000001514 detection method Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
Landscapes
- Rectifiers (AREA)
- Dc-Dc Converters (AREA)
Description
第１図は本考案の一実施例を示す回路図、第２
図は従来の過電圧保護回路の一例を示す回路図で
ある。
図において、１：入力電源、２，３：入力端子
、４：起動抵抗、５，６：トランスの一次巻線端
子、７：トランス、８，９：トランスの二次巻線
端子、１０：ダイオード、１１：平滑コンデンサ
、１２，１３：出力端子、１４：負荷、１５，１
６：抵抗器、１７：定電圧ダイオード、１８：ト
ランジスタ、１９：リレー、２０：リレー１９の
動作接点、２１：リレー、２２：リレー２１の自
己保持接点、２３：リレー２１の動作接点、２４
，２５：駆動巻線端子、２６：制御回路、２７：
スイツチングトランジスタ、２８：ダイオード、
２９：定電圧ダイオード、３０：抵抗、３１：ホ
トサイリスタの発光部、３２：ホトサイリスタの
受光部、３３：雑音吸収回路。
Figure 1 is a circuit diagram showing one embodiment of the present invention;
The figure is a circuit diagram showing an example of a conventional overvoltage protection circuit. In the figure, 1: input power supply, 2, 3: input terminal, 4: starting resistor, 5, 6: transformer primary winding terminal, 7: transformer, 8, 9: transformer secondary winding terminal, 10: diode , 11: Smoothing capacitor, 12, 13: Output terminal, 14: Load, 15, 1
6: Resistor, 17: Constant voltage diode, 18: Transistor, 19: Relay, 20: Operating contact of relay 19, 21: Relay, 22: Self-holding contact of relay 21, 23: Operating contact of relay 21, 24
, 25: Drive winding terminal, 26: Control circuit, 27:
Switching transistor, 28: diode,
29: Constant voltage diode, 30: Resistor, 31: Light emitting part of photothyristor, 32: Light receiving part of photothyristor, 33: Noise absorption circuit.
Claims (1)
タを直列に接続し、上記スイツチングトランジス
タを制御回路によつてオンオフ制御し、前記トラ
ンスの二次巻線出力を整流平滑して負荷に供給し
、前記トランスの駆動巻線出力を前記制御回路に
入力させたリンギングチヨークコンバータにおい
て、 前記トランスの駆動巻線に、ダイオードと定電
圧ダイオードと抵抗とホトサイリスタの発光部の
直列回路からなる過電圧検出回路を並列に接続し
、 前記スイツチングトランジスタのベースとエミ
ツタ間に、前記ホトサイリスタの受光部を接続し
たことを特徴とする過電圧保護回路。[Claims for Utility Model Registration] A switching transistor is connected in series to the primary winding of the transformer, the switching transistor is controlled on and off by a control circuit, and the output of the secondary winding of the transformer is rectified and smoothed. In a ringing chain converter that is supplied to a load and inputs the drive winding output of the transformer to the control circuit, the drive winding of the transformer is connected to a series circuit of a diode, a constant voltage diode, a resistor, and a light emitting part of a photothyristor. An overvoltage protection circuit comprising: an overvoltage detection circuit connected in parallel, and a light receiving section of the photothyristor connected between the base and emitter of the switching transistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1544985U JPS61134687U (en) | 1985-02-06 | 1985-02-06 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1544985U JPS61134687U (en) | 1985-02-06 | 1985-02-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61134687U true JPS61134687U (en) | 1986-08-22 |
Family
ID=30501303
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1544985U Pending JPS61134687U (en) | 1985-02-06 | 1985-02-06 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61134687U (en) |
-
1985
- 1985-02-06 JP JP1544985U patent/JPS61134687U/ja active Pending