JPS55144589A - Pulse counting type timer - Google Patents

Pulse counting type timer

Info

Publication number
JPS55144589A
JPS55144589A JP5379879A JP5379879A JPS55144589A JP S55144589 A JPS55144589 A JP S55144589A JP 5379879 A JP5379879 A JP 5379879A JP 5379879 A JP5379879 A JP 5379879A JP S55144589 A JPS55144589 A JP S55144589A
Authority
JP
Japan
Prior art keywords
voltages
voltage
time
circuit
vary
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
JP5379879A
Other languages
Japanese (ja)
Inventor
Seiichi Uyama
Aritaka Yorifuji
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 JP5379879A priority Critical patent/JPS55144589A/en
Publication of JPS55144589A publication Critical patent/JPS55144589A/en
Pending legal-status Critical Current

Links

Landscapes

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

Abstract

PURPOSE:To vary the time-limit time simply and easily in a wide range by changing over the frequency dividing stage of a counting circuit through a plurality of voltage comparators to which different reference voltages and outside voltages are applied. CONSTITUTION:When an arbitrary voltage is applied through a variable resistor VR to an outside terminal 12 of an integrated circuit 1, this voltage and different reference voltages through series resistors R... of the circuit 1 are compared with each other. Consequently, voltages of different kinds depending upon the number of the comparators 9-11 switches the frequency dividing stages of the counting circuit 3 through one external terminal 12, and it is possible to vary the time-limit time in a wide range by a simple construction and an easy operation.
JP5379879A 1979-04-30 1979-04-30 Pulse counting type timer Pending JPS55144589A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5379879A JPS55144589A (en) 1979-04-30 1979-04-30 Pulse counting type timer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5379879A JPS55144589A (en) 1979-04-30 1979-04-30 Pulse counting type timer

Publications (1)

Publication Number Publication Date
JPS55144589A true JPS55144589A (en) 1980-11-11

Family

ID=12952826

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5379879A Pending JPS55144589A (en) 1979-04-30 1979-04-30 Pulse counting type timer

Country Status (1)

Country Link
JP (1) JPS55144589A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01143520A (en) * 1987-11-30 1989-06-06 Omron Tateisi Electron Co Numeric value setting device
JPH0613867A (en) * 1993-05-21 1994-01-21 Fuji Electric Co Ltd Electronic timer

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01143520A (en) * 1987-11-30 1989-06-06 Omron Tateisi Electron Co Numeric value setting device
JPH0613867A (en) * 1993-05-21 1994-01-21 Fuji Electric Co Ltd Electronic timer

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