JPS5825582U

JPS5825582U - Switching transformer circuit of switching power supply

Info

Publication number: JPS5825582U
Application number: JP11893981U
Authority: JP
Inventors: 川口　千廣
Original assignee: 富士電気化学株式会社
Priority date: 1981-08-11
Filing date: 1981-08-11
Publication date: 1983-02-18

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]

仁　　　第１図は、従来技術の一例を示す回路図、第２
き　　図はそのスイッチング素子の動作波形の説明図、
ケ　　第３図は本考案の一実施例を示す回路図、第４図
、−第５図、第６図はそれぞれ来者−の他の実施例を１
　　示す回路図である。　　　　　　、Ｔ・・・スイッ
チングトランス、Ｑ・・・スイッチング元　　素子、１
・・・平滑回路、５・・・分布容量、６・・・電力消費
する受動素子１．ｎ工・・・１次巻線、ｎ２・・・２次
巻線、′ｎ３・・・副巻線。Jin Figure 1 is a circuit diagram showing an example of the conventional technology, Figure 2 is a circuit diagram showing an example of the conventional technology.
The figure is an explanatory diagram of the operating waveform of the switching element.
Figure 3 is a circuit diagram showing one embodiment of the present invention, and Figures 4, 5, and 6 are circuit diagrams showing other embodiments of the present invention.
FIG. , T... switching transformer, Q... switching element, 1
. . . Smoothing circuit, 5. Distributed capacitance, 6. Passive element that consumes power. 1. n-engine...primary winding, n2...secondary winding, 'n3...sub-winding.

Claims

[Claims for Utility Model Registration] It has an 11th winding and a secondary winding, one end of the primary winding is connected to a switching element, the secondary winding is connected to a smoothing circuit, and the primary side In a switching transformer circuit of a switching power supply, which switches the DC input of a switching element using a switching element and converts the AC output induced in the 2δ winding to DC, an auxiliary winding is installed in parallel with the primary winding. ,group·
One end of the auxiliary winding is open, and the other end is connected to one end of the primary winding via a circuit including a linear element that consumes power, and the circuit current generated in the auxiliary winding is used to consume power in the power receiving element. A switching transformer circuit for a switching power supply, characterized in that: 2 Sub-section 1 of a request for registration of a utility model in which the passive element is a resistor
The circuit described in section. 3. The circuit according to claim 1, wherein the passive element is a through-type coil in which a one-turn winding is applied to a ring ferrite core. (A circuit containing 4 passive elements has a passive element, and: ′
a diode connected in series with the receiver;
Parallel with a resistor with higher impedance than the dynamic element
Paragraph 1 of claims for utility model registration consisting of a circuit)
The circuit described.