JPS6048381U - switching power supply circuit - Google Patents
switching power supply circuitInfo
- Publication number
- JPS6048381U JPS6048381U JP13963383U JP13963383U JPS6048381U JP S6048381 U JPS6048381 U JP S6048381U JP 13963383 U JP13963383 U JP 13963383U JP 13963383 U JP13963383 U JP 13963383U JP S6048381 U JPS6048381 U JP S6048381U
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- power supply
- supply circuit
- rectified
- switching power
- 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
- Dc-Dc Converters (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は従来のスイッチング電源回路、第２区は従来の
補助電源回路、第３図は本考案の実施例の要部回路図、
第４図及び第５図は本考案の実施例の補助電源回路を示
すものである。
１はラインフィルタ、２は整流回路、３，１２．１６，
１７．２７は抵抗、４．９． １８． ２０はコンデン
サ、５．１５はトランジスタ、６は主トランス、８はチ
ョークコイル、１０は制御回路、１１．１４はトランス
、２３は補助電源回路、１９．２５はダイオード、２６
はツェナーダイオード、２８はフォトカブラである。Figure 1 is a conventional switching power supply circuit, Section 2 is a conventional auxiliary power supply circuit, and Figure 3 is a circuit diagram of the main parts of an embodiment of the present invention.
4 and 5 show an auxiliary power supply circuit according to an embodiment of the present invention. 1 is a line filter, 2 is a rectifier circuit, 3, 12.16,
17.27 is resistance, 4.9. 18. 20 is a capacitor, 5.15 is a transistor, 6 is a main transformer, 8 is a choke coil, 10 is a control circuit, 11.14 is a transformer, 23 is an auxiliary power supply circuit, 19.25 is a diode, 26
is a Zener diode, and 28 is a photocoupler.
Claims (1)
チングして主トランスの一次側に印加し、該主トランス
の二次側の誘起電圧を整流して平滑化した直流出力電圧
を制御回路に於いて基準電圧と比較し、その差に対応し
たパルス幅のパルスにより前記トランジスタのスイッチ
ングを制御するスイッチング電源回路に於いて、前記整
流電圧が入力されて前記制御回路の動作電圧を出力する
動作電圧出力部と、前記直流出力電圧が所定値に立上っ
たときに前記動作電圧出力部からの電圧と切換えて前記
直流出力電圧を前記制御回路の動作電圧として加える切
換部とからなる補助電源回路を設けたことを特徴とする
スイッチング電源回路。The AC voltage is rectified [The rectified voltage is switched by a transistor and applied to the primary side of the main transformer, and the induced voltage on the secondary side of the main transformer is rectified and the smoothed DC output voltage is sent to the control circuit. In a switching power supply circuit that compares with a reference voltage and controls switching of the transistor with a pulse having a pulse width corresponding to the difference, an operating voltage output section receives the rectified voltage and outputs an operating voltage of the control circuit. and a switching unit that switches the voltage from the operating voltage output unit and applies the DC output voltage as the operating voltage of the control circuit when the DC output voltage rises to a predetermined value. A switching power supply circuit characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13963383U JPS6048381U (en) | 1983-09-10 | 1983-09-10 | switching power supply circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13963383U JPS6048381U (en) | 1983-09-10 | 1983-09-10 | switching power supply circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6048381U true JPS6048381U (en) | 1985-04-05 |
Family
ID=30312900
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13963383U Pending JPS6048381U (en) | 1983-09-10 | 1983-09-10 | switching power supply circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6048381U (en) |
-
1983
- 1983-09-10 JP JP13963383U patent/JPS6048381U/en active Pending
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