JPS56141566A - Voltage detecting circuit - Google Patents

Voltage detecting circuit

Info

Publication number
JPS56141566A
JPS56141566A JP4410780A JP4410780A JPS56141566A JP S56141566 A JPS56141566 A JP S56141566A JP 4410780 A JP4410780 A JP 4410780A JP 4410780 A JP4410780 A JP 4410780A JP S56141566 A JPS56141566 A JP S56141566A
Authority
JP
Japan
Prior art keywords
voltage
voltage comparator
latch circuits
phi0
moses
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
JP4410780A
Other languages
Japanese (ja)
Inventor
Junichi Tabata
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.)
Seiko Instruments Inc
Original Assignee
Seiko Instruments Inc
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 Seiko Instruments Inc filed Critical Seiko Instruments Inc
Priority to JP4410780A priority Critical patent/JPS56141566A/en
Publication of JPS56141566A publication Critical patent/JPS56141566A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
    • G01R19/16504—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values characterised by the components employed
    • G01R19/16519—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values characterised by the components employed using FET's

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Current Or Voltage (AREA)

Abstract

PURPOSE:To prevent the increase in circuit elements and IC chip size and eliminate the need for regulating parts by constituting a voltage detecting circuit which can detect plural voltage levels by means of C-MOSes. CONSTITUTION:A P-MOS12 and an N-MOS13 are MOSFETs for switching of a voltage comparator 1. The output terminal C of the voltage comparator outputs signals Q1-Qn from respective output terminals via a buffer 14 and latch circuits 15a-15n. The voltage comparator operates in the periods of t0-tn+1 when clock phi0 is L, and further a source voltage dividing circuit is selectively conducted by phi+1-phitn clocks successively. The latch circuits 15a-15n read in the output signal of the voltage comparator successively by the clocks phi1-phin. The plural voltage levels are detected by signal-processing the outputs Q1-Qn of the latch circuits after the clock phi0 returns to H. With such constitution, the increase in circuit elements etc. is prevented and the need for regulating parts is eliminated because the C- MOSes are used.
JP4410780A 1980-04-04 1980-04-04 Voltage detecting circuit Pending JPS56141566A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4410780A JPS56141566A (en) 1980-04-04 1980-04-04 Voltage detecting circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4410780A JPS56141566A (en) 1980-04-04 1980-04-04 Voltage detecting circuit

Publications (1)

Publication Number Publication Date
JPS56141566A true JPS56141566A (en) 1981-11-05

Family

ID=12682379

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4410780A Pending JPS56141566A (en) 1980-04-04 1980-04-04 Voltage detecting circuit

Country Status (1)

Country Link
JP (1) JPS56141566A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61116665A (en) * 1984-11-12 1986-06-04 Fanuc Ltd Low power consumption type voltage comparator circuit
JPS62257068A (en) * 1986-04-30 1987-11-09 Seiko Epson Corp Voltage detection circuit
JPS6385369A (en) * 1986-09-30 1988-04-15 Toshiba Corp Power source voltage detection circuit
WO1997036181A1 (en) * 1996-03-26 1997-10-02 Citizen Watch Co., Ltd. Power supply voltage detecting circuit

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61116665A (en) * 1984-11-12 1986-06-04 Fanuc Ltd Low power consumption type voltage comparator circuit
JPH0548429B2 (en) * 1984-11-12 1993-07-21 Fanuc Ltd
JPS62257068A (en) * 1986-04-30 1987-11-09 Seiko Epson Corp Voltage detection circuit
JPS6385369A (en) * 1986-09-30 1988-04-15 Toshiba Corp Power source voltage detection circuit
WO1997036181A1 (en) * 1996-03-26 1997-10-02 Citizen Watch Co., Ltd. Power supply voltage detecting circuit

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