JPS57111118A - Pulse selecting circuit - Google Patents

Pulse selecting circuit

Info

Publication number
JPS57111118A
JPS57111118A JP18691880A JP18691880A JPS57111118A JP S57111118 A JPS57111118 A JP S57111118A JP 18691880 A JP18691880 A JP 18691880A JP 18691880 A JP18691880 A JP 18691880A JP S57111118 A JPS57111118 A JP S57111118A
Authority
JP
Japan
Prior art keywords
relay
operated
contact
latch
pulse
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP18691880A
Other languages
Japanese (ja)
Inventor
Takashi Takeda
Akira Sudo
Hidetaka Yada
Yukio Kudo
Kazunori Uchikura
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujitsu Ltd
Original Assignee
Fujitsu Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP18691880A priority Critical patent/JPS57111118A/en
Publication of JPS57111118A publication Critical patent/JPS57111118A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/28—Modifications for introducing a time delay before switching

Landscapes

  • Electronic Switches (AREA)

Abstract

PURPOSE:To remove an abnorml short pulse, by providing both a quick operating permanent magnet type latch relay which is not released until the next opposite polarity pulse is applied once it has been operated, and a timer relay having a prescribed working time. CONSTITUTION:When a pulse of ''+'' has been inputted to an input terminal IN1, a current flows to an input terminal IN2 through a latch relay contact a1, a diode D, a timer relay B and a latch relay contact a2 from IN1. If this electric conduction time is shorter than a working time of the timer relay B, the relay B is not operated, but if it is longer, the relay is operated. When the relay B is operated, its contact (b) is closed, and a latch relay A is operated. This relay A is a quick operating permanent magnet type relay, and is not released until the next opposite polarity is applied once it has been operated. When the relay A is operated, its contacts a1, a2 are switched, voltage which has been applied to the relay B is applied in the opposite direction. Therefore, supply of a current to the relay B is stopped by an operation of the diode D, the relay B is released, its contact (b) becomes an opened state, and feed to the relay A is also stopped.
JP18691880A 1980-12-26 1980-12-26 Pulse selecting circuit Pending JPS57111118A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18691880A JPS57111118A (en) 1980-12-26 1980-12-26 Pulse selecting circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18691880A JPS57111118A (en) 1980-12-26 1980-12-26 Pulse selecting circuit

Publications (1)

Publication Number Publication Date
JPS57111118A true JPS57111118A (en) 1982-07-10

Family

ID=16196966

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18691880A Pending JPS57111118A (en) 1980-12-26 1980-12-26 Pulse selecting circuit

Country Status (1)

Country Link
JP (1) JPS57111118A (en)

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