JPS57188132A - State display device for time limit relay - Google Patents

State display device for time limit relay

Info

Publication number
JPS57188132A
JPS57188132A JP7227181A JP7227181A JPS57188132A JP S57188132 A JPS57188132 A JP S57188132A JP 7227181 A JP7227181 A JP 7227181A JP 7227181 A JP7227181 A JP 7227181A JP S57188132 A JPS57188132 A JP S57188132A
Authority
JP
Japan
Prior art keywords
output
circuit
light emitting
emitting diode
gate
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
JP7227181A
Other languages
Japanese (ja)
Inventor
Akio Iimura
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP7227181A priority Critical patent/JPS57188132A/en
Publication of JPS57188132A publication Critical patent/JPS57188132A/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 confirm the present sequence, by flickering a light emitting diode during the detection of time width of a signal and continuously lighting the light emitting diode after detection. CONSTITUTION:An output of an external start circuit 2 is applied to a time detecting circuit 5 to confirm whether the output width is prescribed value or more. A detecting circuit 5 has a counter and counts a clock from a reference oscillation circuit 1. During the count, a clock is outputted from a gate 9, and a light emitting diode 12 is driven and flickered with this clock via a gate 11 and a NOT circuit 7''. When the output of the start circuit 2 is a prescribed width or more, the time detecting circuit 5 generates an output after the end of count by a counter. This output is applied to a light emitting diode 12 via NOT circuits 7' and 7'' and the gate 11 for continuous illumination.
JP7227181A 1981-05-15 1981-05-15 State display device for time limit relay Pending JPS57188132A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7227181A JPS57188132A (en) 1981-05-15 1981-05-15 State display device for time limit relay

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7227181A JPS57188132A (en) 1981-05-15 1981-05-15 State display device for time limit relay

Publications (1)

Publication Number Publication Date
JPS57188132A true JPS57188132A (en) 1982-11-19

Family

ID=13484444

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7227181A Pending JPS57188132A (en) 1981-05-15 1981-05-15 State display device for time limit relay

Country Status (1)

Country Link
JP (1) JPS57188132A (en)

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