JPS54149564A - Delay circuit - Google Patents

Delay circuit

Info

Publication number
JPS54149564A
JPS54149564A JP5846578A JP5846578A JPS54149564A JP S54149564 A JPS54149564 A JP S54149564A JP 5846578 A JP5846578 A JP 5846578A JP 5846578 A JP5846578 A JP 5846578A JP S54149564 A JPS54149564 A JP S54149564A
Authority
JP
Japan
Prior art keywords
capacitor
zener
time
diode
charging voltage
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.)
Granted
Application number
JP5846578A
Other languages
Japanese (ja)
Other versions
JPS5832535B2 (en
Inventor
Kazuo Sakurai
Tokuyuki Fukuda
Shunsuke Kano
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.)
Fuji Electric Co Ltd
Original Assignee
Fuji 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 Fuji Electric Co Ltd filed Critical Fuji Electric Co Ltd
Priority to JP53058465A priority Critical patent/JPS5832535B2/en
Publication of JPS54149564A publication Critical patent/JPS54149564A/en
Publication of JPS5832535B2 publication Critical patent/JPS5832535B2/en
Expired 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
    • H03K17/292—Modifications for introducing a time delay before switching in thyristor, unijunction transistor or programmable unijunction transistor switches

Abstract

PURPOSE:To make it possible to prevent unneeded long-period operation due to initial error information even if the delay time is short, by allowing a circuit not to operate for mixed time at the time of power feeding by using a smoothing capacitor and diodes. CONSTITUTION:When the power supply is put to work, no Zener currents flows from Zener diode ZD1 to diode D2 until the charging voltage of smoothing capacitor C3 reaches the Zener voltage. The time depends upon resistance R1 and the time constant of capacitor C3. If an input signal is gemerated at input-signal secondary winding T2 in this state, the signal current is cut off by diode D2, so that a charging voltage of the polarity applying a reverse bias between the base and emitter of transistor Tr1 will never be developed in capacitor C1. Transistor Tr1, therefore, remains conductive and capacitor C2 is not charged, so that the delay circuit will never operate. When the charging voltage of capacitor C3 reaches the Zener voltage of Zener diode ZD1 afterwards, the delay operation starts.
JP53058465A 1978-05-17 1978-05-17 delay circuit Expired JPS5832535B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP53058465A JPS5832535B2 (en) 1978-05-17 1978-05-17 delay circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP53058465A JPS5832535B2 (en) 1978-05-17 1978-05-17 delay circuit

Publications (2)

Publication Number Publication Date
JPS54149564A true JPS54149564A (en) 1979-11-22
JPS5832535B2 JPS5832535B2 (en) 1983-07-13

Family

ID=13085169

Family Applications (1)

Application Number Title Priority Date Filing Date
JP53058465A Expired JPS5832535B2 (en) 1978-05-17 1978-05-17 delay circuit

Country Status (1)

Country Link
JP (1) JPS5832535B2 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6039153U (en) * 1983-08-22 1985-03-18 ダイセル化学工業株式会社 touch input panel
JPS6051928A (en) * 1983-08-31 1985-03-23 Toppan Moore Co Ltd Signal inputting sheet
JPS60146319A (en) * 1984-01-09 1985-08-02 Matsushita Electric Ind Co Ltd Coordinate input device
JPS63135722A (en) * 1986-11-28 1988-06-08 Toshiba Corp Cooker

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4735738A (en) * 1971-03-29 1972-11-25
JPS5240653A (en) * 1975-09-23 1977-03-29 Rockwell International Corp Frame of knitting machine

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4735738A (en) * 1971-03-29 1972-11-25
JPS5240653A (en) * 1975-09-23 1977-03-29 Rockwell International Corp Frame of knitting machine

Also Published As

Publication number Publication date
JPS5832535B2 (en) 1983-07-13

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