JPS57170627A - Detecting circuit for time limit fault of timer - Google Patents

Detecting circuit for time limit fault of timer

Info

Publication number
JPS57170627A
JPS57170627A JP5464781A JP5464781A JPS57170627A JP S57170627 A JPS57170627 A JP S57170627A JP 5464781 A JP5464781 A JP 5464781A JP 5464781 A JP5464781 A JP 5464781A JP S57170627 A JPS57170627 A JP S57170627A
Authority
JP
Japan
Prior art keywords
timer
resistance
capacitor
circuit
amplifier
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
JP5464781A
Other languages
Japanese (ja)
Inventor
Nobuo Eda
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP5464781A priority Critical patent/JPS57170627A/en
Publication of JPS57170627A publication Critical patent/JPS57170627A/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

  • Pulse Circuits (AREA)
  • Electronic Switches (AREA)

Abstract

PURPOSE:To secure locking during the occurrence of a fault by faciliating the cooperation of a time when a lock output is sent out by comparing variation states of charging voltages, and thus detecting a time limit fault before the output of a timer to be monitored is sent out. CONSTITUTION:In parallel to the timer circuit 4 of a timer 3 to be monitored, a timer circuit 14 for comparison wherein a resistance R2 having the same value with the resistance R1 of the timer and a capacitor C2 having the same value with a capacitor C1 and connected in series is provided. A timer fault judging circuit 16 is connected to a differential voltage detecting circuit 18 with an operational amplifier 17. To the inverted input terminal of the operational amplifier 17 where a feedback resistance R13 is connected, a charging voltage v1 led out of the capacitor C1 is applied through an input terminal R11, and to the uninverted input terminal of the amplifier 17, a charging voltage v2 led out of the capacitor C2 is applied through an input resistance R12. The univerted input terminal of the amplifier 17 is led out as the output terminal of the circuit 18 through a resistance R14, and a voltage v0 between it and the output terminal of the amplifier 17 is inputted as a difference output to a level detector 19.
JP5464781A 1981-04-10 1981-04-10 Detecting circuit for time limit fault of timer Pending JPS57170627A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5464781A JPS57170627A (en) 1981-04-10 1981-04-10 Detecting circuit for time limit fault of timer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5464781A JPS57170627A (en) 1981-04-10 1981-04-10 Detecting circuit for time limit fault of timer

Publications (1)

Publication Number Publication Date
JPS57170627A true JPS57170627A (en) 1982-10-20

Family

ID=12976566

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5464781A Pending JPS57170627A (en) 1981-04-10 1981-04-10 Detecting circuit for time limit fault of timer

Country Status (1)

Country Link
JP (1) JPS57170627A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6712467B1 (en) 1999-04-13 2004-03-30 Hoya Corporation Progressive-power lens and design process for same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6712467B1 (en) 1999-04-13 2004-03-30 Hoya Corporation Progressive-power lens and design process for same

Similar Documents

Publication Publication Date Title
JPS57170627A (en) Detecting circuit for time limit fault of timer
JPS5790219A (en) Neutral detecting method for automatic vehicle
JPS5778382A (en) Driving circuit for dc motor
JPS56115024A (en) Automatic threshold level setting circuit
JPS54109266A (en) Lighting equipment
US3812431A (en) Device for comparing the magnitudes of electrical quantities
SU1226616A1 (en) Flip-flop with noise immunity
SU488222A1 (en) Integrator
JPS5713971A (en) Rectifying circuit
SU1182622A1 (en) Device for pulse-width controlling of pulse regulator
SU455459A1 (en) Counting trigger with controlled start
SU1405102A1 (en) Function converter
JPS57101581A (en) Automatic stopping circuit for dc motor
SU1347152A1 (en) Pulse generator
SU1690175A1 (en) Counter-type flip-flop
SU1290244A1 (en) Meter of duration differences in nanosecond intervals
SU1064431A2 (en) Single-shot multivibrator
SU1721804A1 (en) Control pulse driver
SU1205279A2 (en) Delaying device
JPS6439113A (en) Pulse generating circuit with pulse width varying function
JPS5762630A (en) Control circuit device
JPS5633235A (en) Electrospark machining device
JPS55166341A (en) Timer circuit
JPS54158149A (en) Clock monitor circuit
JPS56108117A (en) Control method of electric power converter