JPS5642431A - Timer circuit - Google Patents

Timer circuit

Info

Publication number
JPS5642431A
JPS5642431A JP12049779A JP12049779A JPS5642431A JP S5642431 A JPS5642431 A JP S5642431A JP 12049779 A JP12049779 A JP 12049779A JP 12049779 A JP12049779 A JP 12049779A JP S5642431 A JPS5642431 A JP S5642431A
Authority
JP
Japan
Prior art keywords
counter
timer time
timer circuit
timer
pulses
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
JP12049779A
Other languages
Japanese (ja)
Inventor
Eizo Yano
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 Electric Works Co Ltd
Original Assignee
Matsushita Electric Works 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 Works Ltd filed Critical Matsushita Electric Works Ltd
Priority to JP12049779A priority Critical patent/JPS5642431A/en
Publication of JPS5642431A publication Critical patent/JPS5642431A/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 make it possible to set long timer time, while varying the timer time continuously, by counting oscillation pulses of a variable frequency oscillator by a counter. CONSTITUTION:The timer circuit consists of variable frequency oscillator 5, counter 6 and inverter 7. Among binary count output terminals OUT of counter 6, a specific one, e.g. binary count-value output terminal OUTn at which a voltage is developed when the counter counts pulses up to 2<n>(n is integer) is used as the output terminal of the timer circuit. Consequently, the timer time, when the oscillation period of oscillator 5 is denoted as T seconds, is TX2<n> seconds and adjusting variable resistance 5d varies period T continuously, so that the timer time will be variable. Additionally, since counter 6 is used to count oscillation pulses, long timer time can freely be set.
JP12049779A 1979-09-14 1979-09-14 Timer circuit Pending JPS5642431A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12049779A JPS5642431A (en) 1979-09-14 1979-09-14 Timer circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12049779A JPS5642431A (en) 1979-09-14 1979-09-14 Timer circuit

Publications (1)

Publication Number Publication Date
JPS5642431A true JPS5642431A (en) 1981-04-20

Family

ID=14787655

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12049779A Pending JPS5642431A (en) 1979-09-14 1979-09-14 Timer circuit

Country Status (1)

Country Link
JP (1) JPS5642431A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61197164A (en) * 1985-02-25 1986-09-01 Kanebo Ltd Synthetic grindstone and its production method
JPS63251169A (en) * 1987-04-04 1988-10-18 Daichiku:Kk Scented grinder element and its manufacture
JPH0639732A (en) * 1992-11-27 1994-02-15 Kanebo Ltd Manufacture of synthetic grinding wheel

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61197164A (en) * 1985-02-25 1986-09-01 Kanebo Ltd Synthetic grindstone and its production method
JPH0583343B2 (en) * 1985-02-25 1993-11-25 Kanebo Ltd
JPS63251169A (en) * 1987-04-04 1988-10-18 Daichiku:Kk Scented grinder element and its manufacture
JPH0639732A (en) * 1992-11-27 1994-02-15 Kanebo Ltd Manufacture of synthetic grinding wheel

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