JPS5828334U

JPS5828334U - power circuit

Info

Publication number: JPS5828334U
Application number: JP12179581U
Authority: JP
Inventors: 中「の」　喜夫
Original assignee: 株式会社東海理化電機製作所
Priority date: 1981-08-19
Filing date: 1981-08-19
Publication date: 1983-02-23

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図は本考案に係る電源回路のブロック図、第２図は
ＣＰＵの出力波形を示す図、第３図は第１図の要部の具
体的回路図を各々表わす。１・・・ＣＰＵ、２．３・・・操作スイッチ、４．５・
・・負荷、６・・・微分回路、７・・・積分回路、８・
・・比較回路、９・・・スイッチング回路、１０・・・
電源スィッチ、１１・・・タイマ回路、１２・・・アン
ド回路。FIG. 1 is a block diagram of a power supply circuit according to the present invention, FIG. 2 is a diagram showing output waveforms of a CPU, and FIG. 3 is a specific circuit diagram of the main part of FIG. 1. 1... CPU, 2.3... Operation switch, 4.5.
...Load, 6...Differential circuit, 7...Integrator circuit, 8.
... Comparison circuit, 9... Switching circuit, 10...
Power switch, 11... timer circuit, 12... AND circuit.

Claims

[Scope of utility model registration request]

When the CPU is operating normally, it outputs pulses of a predetermined period, detects whether or not the pulses are outputting normally, and when the pulses are outputting normally, the CPU
Even if the power is supplied to the CPU, if the pulse is not output normally, the power supply to the CPU is cut off,
1. A power supply circuit characterized in that when the power is turned on, power is supplied to a CPU for a predetermined period of time regardless of whether or not the pulse is normally output.