JPS63131593U - - Google Patents
Info
- Publication number
- JPS63131593U JPS63131593U JP2263087U JP2263087U JPS63131593U JP S63131593 U JPS63131593 U JP S63131593U JP 2263087 U JP2263087 U JP 2263087U JP 2263087 U JP2263087 U JP 2263087U JP S63131593 U JPS63131593 U JP S63131593U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- power
- input
- switching transistor
- starting
- 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
- 239000003990 capacitor Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
Landscapes
- Power Conversion In General (AREA)
- Dc-Dc Converters (AREA)
Description
第１図はこの考案の一実施例の回路図、第２図
はＡＣ入力電源をオフにした場合の主スイツチン
グ回路のコンデンサの電圧と、この考案の検出回
路のコンデンサの電圧と、ＳＣＲの電流の関係を
示す説明図、第３図は従来の回路図を示す。
１…電源スイツチ、２…整流器、３…電源コン
デンサ、４…１次始動回路、５…スイツチングト
ランジスタ、６…出力トランス、７…負荷、８…
２次制御回路、９…制御トランス、１０…ＳＣＲ
制御用コンデンサ、１１…ＳＣＲ、１２…逆流阻
止ダイオード。
Figure 1 is a circuit diagram of an embodiment of this invention, and Figure 2 shows the voltage of the capacitor of the main switching circuit, the voltage of the capacitor of the detection circuit of this invention, and the current of SCR when the AC input power supply is turned off. FIG. 3 shows a conventional circuit diagram. DESCRIPTION OF SYMBOLS 1... Power switch, 2... Rectifier, 3... Power supply capacitor, 4... Primary starting circuit, 5... Switching transistor, 6... Output transformer, 7... Load, 8...
Secondary control circuit, 9...control transformer, 10...SCR
Control capacitor, 11...SCR, 12...backflow blocking diode.
Claims (1)
イツチングトランジスタを起動する１次始動回路
と、 スイツチング動作開始後、スイツチング電源の
２次制御回路の出力を利用して１次始動回路の動
作を停止するＳＣＲ等の記憶素子を用いた停止回
路とを有してなるスイツチングトランジスタの起
動回路において、 停電、入力スイツチ遮断または過電圧過電流保
護回路の動作により入力電源を遮断した後に電源
を再投入する場合に、入力電源側の電源の遮断を
速やかに検出してＳＣＲ等の記憶素子の記憶をリ
セツトする回路を設けたことを特徴とするスイツ
チングトランジスタの起動回路。[Claims for Utility Model Registration] A primary starting circuit that starts when power is input and generates a pulse signal to start the switching transistor, and after starting switching operation, uses the output of the secondary control circuit of the switching power supply. In a switching transistor starting circuit that has a stop circuit using a memory element such as an SCR that stops the operation of the primary starting circuit, if the input power is interrupted due to a power outage, input switch cutoff, or operation of an overvoltage/overcurrent protection circuit. A starting circuit for a switching transistor, characterized in that, when the power is turned on again after being cut off, a circuit is provided that promptly detects the cutoff of the power on the input power source side and resets the memory of a memory element such as an SCR.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2263087U JPS63131593U (en) | 1987-02-18 | 1987-02-18 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2263087U JPS63131593U (en) | 1987-02-18 | 1987-02-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63131593U true JPS63131593U (en) | 1988-08-29 |
Family
ID=30820198
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2263087U Pending JPS63131593U (en) | 1987-02-18 | 1987-02-18 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63131593U (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6037035U (en) * | 1983-08-23 | 1985-03-14 | 株式会社東芝 | Activated metal foil for bonding |
| JPS6245515U (en) * | 1985-09-05 | 1987-03-19 |
-
1987
- 1987-02-18 JP JP2263087U patent/JPS63131593U/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6037035U (en) * | 1983-08-23 | 1985-03-14 | 株式会社東芝 | Activated metal foil for bonding |
| JPS6245515U (en) * | 1985-09-05 | 1987-03-19 |