JPS59145289U

JPS59145289U - switching power supply

Info

Publication number: JPS59145289U
Application number: JP3861583U
Authority: JP
Inventors: 克彦清水
Original assignee: TDK Corp
Current assignee: TDK Corp
Priority date: 1983-03-16
Filing date: 1983-03-16
Publication date: 1984-09-28

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

[Brief explanation of the drawing]

第１図は本考案に係るスイッチング電源の電気回路接続
図、第２図は本考案に係るスイッチング電源の更に具体
的な実施例における電気回路接続図、第３図ａ　”　ｅ
はその各部の波形図、第４図は過電流制御特性を示す図
、第５図は本考案に係るスイッチング電源の別の実施例
における要部の電気回路接続図である。１・・・・・・スイッチング回路、Ｔ１・・・・・・変
圧器、Ｎ２１．Ｎ２２・・・・・・巻線、Ｄｉ　１．　
Ｄ２１・・・−・・ダイオオード、Ｃ１１，Ｃ２１・・
・・・・コンデンサ、ＣＴｉ。Ｃｒ２・・・・・・カレントトランス。Figure 1 is an electric circuit connection diagram of a switching power supply according to the present invention, Figure 2 is an electric circuit connection diagram of a more specific embodiment of the switching power supply according to the present invention, and Figure 3 is a.
4 is a diagram showing the overcurrent control characteristics, and FIG. 5 is an electric circuit connection diagram of the main parts in another embodiment of the switching power supply according to the present invention. 1... Switching circuit, T1... Transformer, N21. N22... Winding wire, Di 1.
D21...--Diode, C11, C21...
...Capacitor, CTi. Cr2...Current transformer.

Claims

[Scope of utility model registration request]

(1) Switching the DC input by a switching element connected to the input winding of the transformer, taking out the switching output to a plurality of output windings provided in the transformer, and A switching power supply is configured to obtain a plurality of DC outputs by a rectifier circuit and a smoothing circuit respectively provided in the plurality of output side windings, wherein one end side of one winding is connected to the rectifier circuit in the other winding. A switching device characterized in that the current transformer is connected in series to the output side of the circuit, and a current transformer is inserted and connected in series between the connection position and the subsequent smoothing circuit, and the current transformer is used as an overcurrent detection terminal. power supply.

(2) The switching according to claim 1 of the utility model registration, characterized in that a DC output is obtained by rectifying and smoothing the flyback voltage generated in the output winding of the transformer during the off period of the switching element. power supply.

(3) When no current flows through the primary winding of the current transformer, the voltage generated in the secondary winding of the current transformer is used as a detection signal for overcurrent control. A switching power supply according to claim 1 or 2 of the utility model registration claim.