JPS60166234U

JPS60166234U - Power outage detection device

Info

Publication number: JPS60166234U
Application number: JP5357384U
Authority: JP
Inventors: 上林　勝一
Original assignee: ニチデン機械株式会社
Priority date: 1984-04-11
Filing date: 1984-04-11
Publication date: 1985-11-05

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) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図は本考案に係る停電検出装置の一実施例を示す回
路図、第２図ａ　”　ｄ及び第３図ａ−ｄはその停電検
出装置の動作例を説明するための波形図である。３・・・・・・第１のノイズフィルタ回路、４・曲・コ
ンパレータ回路、５・・・・・・レベル変換回路、６・
・間第２のノイズフィルタ回路、７・・・・・・検出回
路、７ａ・・；・・・単安定マルチバイブレータ、Ａ、
Ａ′・・曲交流電源電圧、Ｂ・・・・・・スレッシュホ
ールド信号、Ｃ−・・・・・・トリガパレス信号。FIG. 1 is a circuit diagram showing an embodiment of the power outage detection device according to the present invention, and FIGS. 2 a d and 3 a to 3 are waveform diagrams for explaining an example of the operation of the power outage detection device. 3...First noise filter circuit, 4. Song/comparator circuit, 5...Level conversion circuit, 6.
・Second noise filter circuit, 7...detection circuit, 7a...monostable multivibrator, A,
A'... Song AC power supply voltage, B... Threshold signal, C-... Trigger pulse signal.

Claims

[Scope of utility model registration request]

a first noise filter circuit to which a power supply voltage is applied; a comparator circuit that compares and discriminates the output signal of the first noise filter circuit with a novel changeable threshold signal set in advance to a predetermined value; It has a level conversion circuit that converts the level of the output trigger pulse signal, a second noise filter circuit that removes noise from the output signal of the level conversion circuit, and a C-MOS monostable multivibrator. 1. A power outage detection device comprising: a detection circuit for detecting the presence or absence of a power outage in a monostable multivibrator L/- evening trigger state based on a trigger pulse signal output from a noise filter circuit.