JPS62165790U

JPS62165790U -

Info

Publication number: JPS62165790U
Application number: JP5205086U
Authority: JP
Priority date: 1986-04-09
Filing date: 1986-04-09
Publication date: 1987-10-21

Description

[Brief explanation of the drawing]

第１図、第２図はそれぞれ、本考案の第１、第
２の実施例の回路図、第３図は従来例の回路図、
第４図は従来の他の例の要部回路図。図中、１３は比較器、３４はスイツチングトラ
ンジスタ。 1 and 2 are circuit diagrams of the first and second embodiments of the present invention, respectively, and FIG. 3 is a circuit diagram of a conventional example.
FIG. 4 is a circuit diagram of a main part of another conventional example. In the figure, 13 is a comparator, and 34 is a switching transistor.

Claims

[Scope of utility model registration request]

In a switching regulator that performs power conversion by connecting a switching transistor to the primary winding of an isolated output transformer, the output generated during the ON period of the switching transistor is applied to the secondary side of the output transformer. A circuit that adjusts the induced voltage in the secondary winding of the transformer, a circuit that smoothes the induced voltage at its peak value using a capacitor, and a circuit that compares the smoothed voltage value with a preset reference voltage. A switching regulator equipped with a circuit to detect a drop in input voltage.