CH639521GA3 - - Google Patents

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Publication number
CH639521GA3
CH639521GA3 CH412880A CH412880A CH639521GA3 CH 639521G A3 CH639521G A3 CH 639521GA3 CH 412880 A CH412880 A CH 412880A CH 412880 A CH412880 A CH 412880A CH 639521G A3 CH639521G A3 CH 639521GA3
Authority
CH
Switzerland
Prior art keywords
value
voltage
diode
terminals
difference
Prior art date
Application number
CH412880A
Other languages
French (fr)
Other versions
CH639521B (en
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
Publication of CH639521B publication Critical patent/CH639521B/en
Application filed filed Critical
Priority to CH412880A priority Critical patent/CH639521B/en
Priority to DE19813119048 priority patent/DE3119048A1/en
Priority to US06/265,594 priority patent/US4424457A/en
Priority to JP7580681A priority patent/JPS5718120A/en
Publication of CH639521GA3 publication Critical patent/CH639521GA3/fr
Priority to HK49590A priority patent/HK49590A/en

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
    • G01R19/16533—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 application
    • G01R19/16538—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 application in AC or DC supplies
    • G01R19/16542—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 application in AC or DC supplies for batteries
    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C10/00—Arrangements of electric power supplies in time pieces
    • G04C10/04—Arrangements of electric power supplies in time pieces with means for indicating the condition of the power supply

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Current Or Voltage (AREA)
  • Amplifiers (AREA)
  • Manipulation Of Pulses (AREA)
  • Electronic Switches (AREA)
  • Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)

Abstract

A voltage level detector circuit, which enables an input voltage to be compared with a predetermined stable reference level, defined on the basis of the sum of a first value of the direct voltage across the terminals of a diode and of the product of the difference between this first value and a second value of the voltage across the terminals of the diode by a predetermined coefficient, comprises substantially identical bipolar transistors (1, 2), connected as diodes, in series with current sources (3, 4) for generating voltages representative of these first and second values, a capacitive calculating circuit (5-8) which produces a signal representative of the algebraic value of the difference between the input voltage and the reference level and an amplifier (9) for bringing this signal to a logic level.
CH412880A 1980-05-28 1980-05-28 VOLTAGE LEVEL DETECTOR CIRCUIT. CH639521B (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
CH412880A CH639521B (en) 1980-05-28 1980-05-28 VOLTAGE LEVEL DETECTOR CIRCUIT.
DE19813119048 DE3119048A1 (en) 1980-05-28 1981-05-13 "VOLTAGE LEVEL DETECTOR"
US06/265,594 US4424457A (en) 1980-05-28 1981-05-20 Voltage level detecting circuit
JP7580681A JPS5718120A (en) 1980-05-28 1981-05-21 Voltage level detecting circuit
HK49590A HK49590A (en) 1980-05-28 1990-06-28 Voltage level detecting circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH412880A CH639521B (en) 1980-05-28 1980-05-28 VOLTAGE LEVEL DETECTOR CIRCUIT.

Publications (2)

Publication Number Publication Date
CH639521B CH639521B (en)
CH639521GA3 true CH639521GA3 (en) 1983-11-30

Family

ID=4270345

Family Applications (1)

Application Number Title Priority Date Filing Date
CH412880A CH639521B (en) 1980-05-28 1980-05-28 VOLTAGE LEVEL DETECTOR CIRCUIT.

Country Status (4)

Country Link
US (1) US4424457A (en)
JP (1) JPS5718120A (en)
CH (1) CH639521B (en)
DE (1) DE3119048A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0099956B1 (en) * 1982-07-28 1987-10-21 International Business Machines Corporation Signal receiver and its utilization in a receiving circuit indicating the condition of the connected equipment
KR900001746B1 (en) * 1987-01-24 1990-03-19 삼성반도체통신 주식회사 High voltage and high power drive circuit by bicmos
US4980581A (en) * 1990-05-21 1990-12-25 Motorola, Inc. Differential ECL bus tri-state detection receiver
US6016245A (en) * 1998-03-13 2000-01-18 Intel Corporation Voltage overshoot protection circuit
DE19818464A1 (en) * 1998-04-24 1999-10-28 Siemens Ag Reference voltage generation circuit

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2159760C3 (en) * 1971-12-02 1979-11-15 Deutsche Itt Industries Gmbh, 7800 Freiburg Electronic threshold switch

Also Published As

Publication number Publication date
US4424457A (en) 1984-01-03
DE3119048C2 (en) 1988-01-21
JPH0121647B2 (en) 1989-04-21
DE3119048A1 (en) 1982-03-25
JPS5718120A (en) 1982-01-29
CH639521B (en)

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