JPS59115541U

JPS59115541U - AC load switchgear

Info

Publication number: JPS59115541U
Application number: JP974083U
Authority: JP
Inventors: 雅信繁田
Original assignee: 富士電機株式会社
Priority date: 1983-01-25
Filing date: 1983-01-25
Publication date: 1984-08-04

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図は従来装置の回路図、第２図は第１図に示した装
置の動作を示すタイムチャート、第３図は本考案による
実施例の回路図、第４図は第３図に示した装置の動作を
示すタイムチャートである。１・・・演算制御装置、Ｐ・・・交流電源、Ｄ・・・ダ
イオード、ＰＣ・・・フォトカプラ、Ｘ・・・リレー、
Ｘリレー接点、Ｌ・・・交流負荷、ＤＢ・・・ダイオー
ドブリッジ、ＦＦ□、　ＦＦ２・・・Ｄフリップフロッ
プ、ＮＤｌ。ＮＤ２・・・ＮＡＮＤゲート回路、ＤＲ・・・リレード
ライバー、Ｒ□〜Ｒ８・・・抵抗。FIG. 1 is a circuit diagram of a conventional device, FIG. 2 is a time chart showing the operation of the device shown in FIG. 1, FIG. 3 is a circuit diagram of an embodiment of the present invention, and FIG. 2 is a time chart showing the operation of the device. 1... Arithmetic control device, P... AC power supply, D... diode, PC... photocoupler, X... relay,
X relay contact, L...AC load, DB...diode bridge, FF□, FF2...D flip-flop, NDl. ND2...NAND gate circuit, DR...relay driver, R□~R8...resistance.

Claims

[Scope of utility model registration request]

In an AC load switching device that includes a timer for counting reference clock pulses synchronized with an AC power source to determine the operating time of a relay, the AC load switching device switches a load of the AC power source using a contact point of the relay. A circuit that generates a pulse obtained by dividing a pulse synchronized with a rectified waveform by two as the reference clock pulse, and a phase with respect to the AC power supply at the time when the reference clock pulse is counted by the timer differs by 180 degrees for each operation of the relay. An AC load switching device characterized by being equipped with a switching circuit for switching.
? 1 flash