JPH0340893U

JPH0340893U -

Info

Publication number: JPH0340893U
Application number: JP10190189U
Authority: JP
Priority date: 1989-08-31
Filing date: 1989-08-31
Publication date: 1991-04-19
Anticipated expiration: 2004-08-31
Also published as: JPH0750873Y2

Description

[Brief explanation of drawings]

第１図は本考案のインバータ電源回路の一実施
例の回路図、第２図は従来のインバータ電源回路
の回路図、第３図は第２図の回路における周波数
−インピーダンス特性図、第４図はカレントトラ
ンスとコンデンサの並列回路における周波数−イ
ンピーダンス特性図、第５図は第１図の回路にお
ける周波数−インピーダンス特性図である。１……スイツチングトランス、２……駆動回路
、３……カレントトランス、４……直流電源、５
……コンデンサ。 Fig. 1 is a circuit diagram of an embodiment of the inverter power supply circuit of the present invention, Fig. 2 is a circuit diagram of a conventional inverter power supply circuit, Fig. 3 is a frequency-impedance characteristic diagram of the circuit of Fig. 2, and Fig. 4 is a frequency-impedance characteristic diagram for a parallel circuit of a current transformer and a capacitor, and FIG. 5 is a frequency-impedance characteristic diagram for the circuit of FIG. 1... Switching transformer, 2... Drive circuit, 3... Current transformer, 4... DC power supply, 5
...Capacitor.

Claims

[Scope of utility model registration request]

In the inverter power supply circuit, the inverter power supply circuit includes a switching transformer, a drive circuit that controls a current from a DC power source flowing through the switching transformer, and a current transformer that detects the current flowing through the switching transformer and controls the drive circuit. An inverter power supply circuit characterized in that a capacitor is connected to a current transformer to form a parallel resonant circuit, and the frequency of the parallel resonant circuit is made to match the self-series resonant frequency of the switching transformer.