JPS5630673A - Pulse counting timer - Google Patents

Pulse counting timer

Info

Publication number
JPS5630673A
JPS5630673A JP10752779A JP10752779A JPS5630673A JP S5630673 A JPS5630673 A JP S5630673A JP 10752779 A JP10752779 A JP 10752779A JP 10752779 A JP10752779 A JP 10752779A JP S5630673 A JPS5630673 A JP S5630673A
Authority
JP
Japan
Prior art keywords
counter
square wave
output
pulse counting
generator
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
JP10752779A
Other languages
Japanese (ja)
Inventor
Isamu Ohara
Isao Yuchi
Shigeru Tamefusa
Yasushige Yasuda
Tetsuya Waniishi
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.)
Omron Corp
Original Assignee
Omron Tateisi Electronics Co
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 Omron Tateisi Electronics Co filed Critical Omron Tateisi Electronics Co
Priority to JP10752779A priority Critical patent/JPS5630673A/en
Publication of JPS5630673A publication Critical patent/JPS5630673A/en
Pending legal-status Critical Current

Links

Landscapes

  • Measurement Of Predetermined Time Intervals (AREA)
  • Electronic Switches (AREA)

Abstract

PURPOSE: To achieve less influence from noise with a constant frequency of the reference pulse to be counted by counting it with a counter to be controlled by a low frequency square wave variable in duty.
CONSTITUTION: The output of a reference pulse generator 3 for generating a constant frequency pulse is inputted into a counter 10 as an "and" 5 with the output of a square wave generator 4 for producing a low frequency square wave. The time limit of a timer is changed depending on the duty ratio of the square wave generator 4. A counter with an inhibit input terminal may replace a "and" circuit 5 and the counter 10.
COPYRIGHT: (C)1981,JPO&Japio
JP10752779A 1979-08-22 1979-08-22 Pulse counting timer Pending JPS5630673A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10752779A JPS5630673A (en) 1979-08-22 1979-08-22 Pulse counting timer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10752779A JPS5630673A (en) 1979-08-22 1979-08-22 Pulse counting timer

Publications (1)

Publication Number Publication Date
JPS5630673A true JPS5630673A (en) 1981-03-27

Family

ID=14461443

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10752779A Pending JPS5630673A (en) 1979-08-22 1979-08-22 Pulse counting timer

Country Status (1)

Country Link
JP (1) JPS5630673A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7026729B2 (en) * 2002-01-08 2006-04-11 Timothy C. Homan Exhaust fan timeout system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7026729B2 (en) * 2002-01-08 2006-04-11 Timothy C. Homan Exhaust fan timeout system

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