FR2468915A1 - ELECTRIC CURRENT COMPARATOR ASSEMBLY - Google Patents

ELECTRIC CURRENT COMPARATOR ASSEMBLY

Info

Publication number
FR2468915A1
FR2468915A1 FR8023537A FR8023537A FR2468915A1 FR 2468915 A1 FR2468915 A1 FR 2468915A1 FR 8023537 A FR8023537 A FR 8023537A FR 8023537 A FR8023537 A FR 8023537A FR 2468915 A1 FR2468915 A1 FR 2468915A1
Authority
FR
France
Prior art keywords
current comparator
electric current
current
comparator assembly
assembly
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.)
Withdrawn
Application number
FR8023537A
Other languages
French (fr)
Inventor
Ulrich Fleischer
Harmut Seiler
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of FR2468915A1 publication Critical patent/FR2468915A1/en
Withdrawn legal-status Critical Current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
    • G01R19/16566—Circuits and arrangements for comparing voltage or current with one or several thresholds and for indicating the result not covered by subgroups G01R19/16504, G01R19/16528, G01R19/16533
    • G01R19/16571—Circuits and arrangements for comparing voltage or current with one or several thresholds and for indicating the result not covered by subgroups G01R19/16504, G01R19/16528, G01R19/16533 comparing AC or DC current with one threshold, e.g. load current, over-current, surge current or fault current
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
    • H03K3/02—Generators characterised by the type of circuit or by the means used for producing pulses
    • H03K3/26—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of bipolar transistors with internal or external positive feedback
    • H03K3/28—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of bipolar transistors with internal or external positive feedback using means other than a transformer for feedback
    • H03K3/281—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of bipolar transistors with internal or external positive feedback using means other than a transformer for feedback using at least two transistors so coupled that the input of one is derived from the output of another, e.g. multivibrator
    • H03K3/286—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of bipolar transistors with internal or external positive feedback using means other than a transformer for feedback using at least two transistors so coupled that the input of one is derived from the output of another, e.g. multivibrator bistable
    • H03K3/2893—Bistables with hysteresis, e.g. Schmitt trigger
    • H03K3/2897—Bistables with hysteresis, e.g. Schmitt trigger with an input circuit of differential configuration

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Manipulation Of Pulses (AREA)
  • Measurement Of Current Or Voltage (AREA)

Abstract

a. Montage comparateur de courant électrique sous la forme de dispositif à symétrie de courant. b. Caractérisé en ce que, en vue d'obtenir une hystérésis de commutation, par l'intermédiaire d'un commutateur 5 commandé par la grandeur de sortie, il est produit un premier flux de courant supplémentaire à travers les transistors 2, 3 d'un montage à symétrie de courant 1 pour faire varier les seuils de commutation du comparateur de courant c. Dispositif pour la comparaison en continu de tensions électriques.at. Electric current comparator assembly in the form of a current symmetry device. b. Characterized in that, in order to obtain a switching hysteresis, by means of a switch 5 controlled by the output variable, a first additional current flow is produced through the transistors 2, 3 of a current symmetry circuit 1 to vary the switching thresholds of the current comparator c. Device for the continuous comparison of electric voltages.

FR8023537A 1979-11-06 1980-11-04 ELECTRIC CURRENT COMPARATOR ASSEMBLY Withdrawn FR2468915A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19792944657 DE2944657C2 (en) 1979-11-06 1979-11-06 Comparator circuit

Publications (1)

Publication Number Publication Date
FR2468915A1 true FR2468915A1 (en) 1981-05-08

Family

ID=6085196

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8023537A Withdrawn FR2468915A1 (en) 1979-11-06 1980-11-04 ELECTRIC CURRENT COMPARATOR ASSEMBLY

Country Status (4)

Country Link
JP (1) JPS5675722A (en)
DE (1) DE2944657C2 (en)
FR (1) FR2468915A1 (en)
GB (1) GB2062996A (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3146958C1 (en) * 1981-11-26 1983-04-14 Siemens AG, 1000 Berlin und 8000 München Method for generating a reference voltage in a comparator
US4717838A (en) * 1986-11-14 1988-01-05 National Semiconductor Corporation High input impedance, high gain CMOS strobed comparator
EP0288977A1 (en) * 1987-04-28 1988-11-02 Canon Kabushiki Kaisha Current comparison circuit
DE4016316B4 (en) * 1990-05-21 2004-02-12 Robert Bosch Gmbh Evaluation circuit for the signals of a signal source
JP2921968B2 (en) * 1990-11-19 1999-07-19 キヤノン株式会社 Comparator
DE4121941C1 (en) * 1991-07-03 1993-02-25 Telefunken Electronic Gmbh, 7100 Heilbronn, De Circuitry storing switching states in dependence on threshold values - has differential amplifier stage with two emitter-coupled transistors and current mirror as active load forming comparison stage
US5808489A (en) * 1994-06-30 1998-09-15 Harris Corporation High speed A/D converter and slew controlled pulse detector

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3816761A (en) * 1973-01-02 1974-06-11 Rca Corp Comparator circuitry
SE409511B (en) * 1977-06-15 1979-08-20 Svein Erik VOLTAGE COMPARATOR
US4198581A (en) * 1977-10-13 1980-04-15 Rca Corporation Temperature compensating comparator
JPS6025743B2 (en) * 1977-12-28 1985-06-20 ソニー株式会社 current comparison circuit

Also Published As

Publication number Publication date
DE2944657A1 (en) 1981-06-04
GB2062996A (en) 1981-05-28
DE2944657C2 (en) 1985-02-14
JPS5675722A (en) 1981-06-23

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Legal Events

Date Code Title Description
ST Notification of lapse