JPS6082988U - Control circuit for switching DC power supply - Google Patents
Control circuit for switching DC power supplyInfo
- Publication number
- JPS6082988U JPS6082988U JP17503483U JP17503483U JPS6082988U JP S6082988 U JPS6082988 U JP S6082988U JP 17503483 U JP17503483 U JP 17503483U JP 17503483 U JP17503483 U JP 17503483U JP S6082988 U JPS6082988 U JP S6082988U
- Authority
- JP
- Japan
- Prior art keywords
- control circuit
- switching
- voltage
- power supply
- circuit
- 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方式直流電源の制御回路、
第２図は本考案の一実施例を示す回路図、第３図は本考
案に基づいた実験結果を示す特性図である。
４・・・スイッチング素子、５・・・スイッチングトラ
ンス、７・・・負荷、８・・・定電圧制御回路、９・・
・パルス幅制御回路、１０・・・励磁エネルギー吸収回
路、１１・・・電圧検出回路、１１３・・・ツェナーダ
イオード。Figure 1 shows the control circuit of a conventional switching DC power supply.
FIG. 2 is a circuit diagram showing an embodiment of the present invention, and FIG. 3 is a characteristic diagram showing experimental results based on the present invention. 4... Switching element, 5... Switching transformer, 7... Load, 8... Constant voltage control circuit, 9...
- Pulse width control circuit, 10... Excitation energy absorption circuit, 11... Voltage detection circuit, 113... Zener diode.
Claims (1)
とスイッチング素子の直列回路に与え、該トランスの出
力を整流平滑して負荷に直流電力を供給し、負荷電圧を
一定に制御する定電圧制御回路の制御信号に応じてパル
ス幅制御回路が該スイッチング素子のオン・オフ比を制
御するスイッチング方式直流電源において、上記スイッ
チングトランスの一次巻線間に設けられ上記スイッチン
グ素子のオフ期間に該トランスの励磁エネルギーを吸収
するのに該スイッチング素子のオン期間よりも短い時間
で吸収する励磁エネルギー吸収回路と、上記直流入力の
電圧を検出し該電圧が定格電圧範囲以下に低下したとき
に上記パルス幅制御回路のパルス出力のオン期間の制限
をオフ期間よりも大きくなる範囲まで拡げる電圧検出回
路とを備えたことを特徴とするスイッチング方式直流電
源の制御回路。A control signal for a constant voltage control circuit that applies a rectified and smoothed DC input from AC to a series circuit of a switching transformer and a switching element, rectifies and smoothes the output of the transformer, supplies DC power to a load, and controls the load voltage at a constant level. In a switching type DC power supply in which a pulse width control circuit controls the on/off ratio of the switching element according to an excitation energy absorption circuit that absorbs the energy in a shorter time than the ON period of the switching element; and a pulse width control circuit that detects the voltage of the DC input and outputs a pulse from the pulse width control circuit when the voltage falls below the rated voltage range. 1. A control circuit for a switching type DC power supply, comprising: a voltage detection circuit that extends the limit on the on-period to a range larger than the off-period.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17503483U JPS6082988U (en) | 1983-11-11 | 1983-11-11 | Control circuit for switching DC power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17503483U JPS6082988U (en) | 1983-11-11 | 1983-11-11 | Control circuit for switching DC power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6082988U true JPS6082988U (en) | 1985-06-08 |
Family
ID=30380905
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17503483U Pending JPS6082988U (en) | 1983-11-11 | 1983-11-11 | Control circuit for switching DC power supply |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6082988U (en) |
-
1983
- 1983-11-11 JP JP17503483U patent/JPS6082988U/en active Pending
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