JPS5573136A - Timer circuit - Google Patents

Timer circuit

Info

Publication number
JPS5573136A
JPS5573136A JP14745478A JP14745478A JPS5573136A JP S5573136 A JPS5573136 A JP S5573136A JP 14745478 A JP14745478 A JP 14745478A JP 14745478 A JP14745478 A JP 14745478A JP S5573136 A JPS5573136 A JP S5573136A
Authority
JP
Japan
Prior art keywords
capacitor
put12
capacity
timer
circuit
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
JP14745478A
Other languages
Japanese (ja)
Inventor
Mitsuhiko Kikuoka
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 JP14745478A priority Critical patent/JPS5573136A/en
Publication of JPS5573136A publication Critical patent/JPS5573136A/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
    • H03K17/292—Modifications for introducing a time delay before switching in thyristor, unijunction transistor or programmable unijunction transistor switches

Landscapes

  • Electronic Switches (AREA)

Abstract

PURPOSE:To secure performance of the time sequence in a simple way by detecting the voltage waveform of the capacitor's charge and discharge via the slice level of the Schmitt circuit. CONSTITUTION:The capacity of capacitor 9 is set larger enough than that of capacitor 11. As a result, the gate voltage of PUT12 lowers suddenly since the value of the capacity ot capacitor 11 is small in case the power input is cut off mistakenly before time-up of the timer circuit. And PUT12 is turned on to discharge the charge stored in capacitor 9 to resistance 16. Thus the Schmitt circuit comprising resistances 17 and 18 plus inverters 19 and 20 is actuated to give the alarm, informing that the timer is under operation.
JP14745478A 1978-11-28 1978-11-28 Timer circuit Pending JPS5573136A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14745478A JPS5573136A (en) 1978-11-28 1978-11-28 Timer circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14745478A JPS5573136A (en) 1978-11-28 1978-11-28 Timer circuit

Publications (1)

Publication Number Publication Date
JPS5573136A true JPS5573136A (en) 1980-06-02

Family

ID=15430713

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14745478A Pending JPS5573136A (en) 1978-11-28 1978-11-28 Timer circuit

Country Status (1)

Country Link
JP (1) JPS5573136A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5076961A (en) * 1973-11-08 1975-06-24

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5076961A (en) * 1973-11-08 1975-06-24

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