JPS57145433A - Time limiting circuit - Google Patents

Time limiting circuit

Info

Publication number
JPS57145433A
JPS57145433A JP2997581A JP2997581A JPS57145433A JP S57145433 A JPS57145433 A JP S57145433A JP 2997581 A JP2997581 A JP 2997581A JP 2997581 A JP2997581 A JP 2997581A JP S57145433 A JPS57145433 A JP S57145433A
Authority
JP
Japan
Prior art keywords
circuit
counter
capacitor
output
sampling
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
JP2997581A
Other languages
Japanese (ja)
Inventor
Akio Tanimizu
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP2997581A priority Critical patent/JPS57145433A/en
Publication of JPS57145433A publication Critical patent/JPS57145433A/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 obtain a high-precision, time-extended circuit by adding an oscillating circuit, composed of a voltage comparator, and a counter to a CR charging and discharging circuit, and then controlling the oscillating circuit or counter by a sampling signal. CONSTITUTION:A DC power source E charge a capacitor C through a charging resistance R. When the voltage of the capacitor C rises above a prescribed value, an oscillating circuit 2 turns on a transistor (TR) 4 to discharge the capacitor C. A counter 3 integrates output pulses from the circuit 2. A sampling circuit 9 samples the output of an AC power source 7 and applies its output to an oscillation control circuit 6. The circuit 6 turns on the TR4 synchronously with the signal from the circuit 9. Therefore, the sampling rate of the circuit 9 is adjusted to control the number of pulses counted by the counter 3, so a time limit is adjusted.
JP2997581A 1981-03-04 1981-03-04 Time limiting circuit Pending JPS57145433A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2997581A JPS57145433A (en) 1981-03-04 1981-03-04 Time limiting circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2997581A JPS57145433A (en) 1981-03-04 1981-03-04 Time limiting circuit

Publications (1)

Publication Number Publication Date
JPS57145433A true JPS57145433A (en) 1982-09-08

Family

ID=12290954

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2997581A Pending JPS57145433A (en) 1981-03-04 1981-03-04 Time limiting circuit

Country Status (1)

Country Link
JP (1) JPS57145433A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4737669A (en) * 1986-07-31 1988-04-12 Rca Corporation Slow-start system for a control circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4737669A (en) * 1986-07-31 1988-04-12 Rca Corporation Slow-start system for a control circuit

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