JPS5958818U

JPS5958818U - power circuit

Info

Publication number: JPS5958818U
Application number: JP15293882U
Authority: JP
Inventors: 久山本
Original assignee: 横河電機株式会社
Priority date: 1982-10-08
Filing date: 1982-10-08
Publication date: 1984-04-17

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 drawings]

′　第１図は本考案に係る電源回路の実施例の回路図、
第２図は第１図回路の動作を説明するための図、第３図
は従来の電源回路の一例の回路図である。１０・・・電源トランス、２０・・・主電源回路、３′
０・・・周波数検出回路。' Figure 1 is a circuit diagram of an embodiment of the power supply circuit according to the present invention;
FIG. 2 is a diagram for explaining the operation of the circuit shown in FIG. 1, and FIG. 3 is a circuit diagram of an example of a conventional power supply circuit. 10...Power transformer, 20...Main power circuit, 3'
0...Frequency detection circuit.

Claims

[Scope of utility model registration request]

a main power supply circuit comprising a power transformer having an input winding and an output winding, a rectifier circuit, a capacitor, and a stabilizing circuit, rectifying and filtering the voltage obtained from the output winding of the power transformer to obtain a stable DC voltage; , a frequency detection circuit that detects the frequency of an AC source voltage whose negative pole is connected to the output winding of the power transformer and whose other pole is connected to a resistive element and which is applied to the input winding of the power transformer from the resistive element. A power supply circuit equipped with