ES361970A1 - Marginal switching arrangement - Google Patents

Marginal switching arrangement

Info

Publication number
ES361970A1
ES361970A1 ES361970A ES361970A ES361970A1 ES 361970 A1 ES361970 A1 ES 361970A1 ES 361970 A ES361970 A ES 361970A ES 361970 A ES361970 A ES 361970A ES 361970 A1 ES361970 A1 ES 361970A1
Authority
ES
Spain
Prior art keywords
bases
relay
input voltage
transistors
flows
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.)
Expired
Application number
ES361970A
Other languages
Spanish (es)
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.)
Nokia Spain SA
Original Assignee
Alcatel Espana SA
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 Alcatel Espana SA filed Critical Alcatel Espana SA
Publication of ES361970A1 publication Critical patent/ES361970A1/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/08—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C13/00—Portable extinguishers which are permanently pressurised or pressurised immediately before use
    • A62C13/66—Portable extinguishers which are permanently pressurised or pressurised immediately before use with extinguishing material and pressure gas being stored in separate containers
    • 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
    • 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
    • G01R19/145—Indicating the presence of current or voltage
    • 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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K5/00—Manipulating of pulses not covered by one of the other main groups of this subclass
    • H03K5/22—Circuits having more than one input and one output for comparing pulses or pulse trains with each other according to input signal characteristics, e.g. slope, integral

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Public Health (AREA)
  • Nonlinear Science (AREA)
  • Power Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Measurement Of Current Or Voltage (AREA)
  • Electronic Switches (AREA)
  • Emergency Alarm Devices (AREA)
  • Amplifiers (AREA)

Abstract

A circuit for detecting whether an input voltage is within a given range comprises two transistor long-tail pairs Q 3 , Q 4 and Q 1 , Q 2 having the input voltage S applied to the bases of one side of the pairs and having reference voltages corresponding to the two limits of the range applied to the other bases, the collectors of corresponding sides being connected together and to a detector which indicates the desired condition. When the input voltage is between the reference voltages the common emitter current i 1 flows through Q 2 , and the similar current i 2 flows to Q 3 so that the voltage across the relay is zero. If the input is outside the range both transistors on one side or the other conduct and the relay operates. The relay is replaced in Fig. 2 (not shown) by a pair of transistors having commoned collectors, commoned emitters connected to a transistor acting as a Zener diode and having the output voltages from R 3 and R 4 applied to the bases.
ES361970A 1967-12-29 1968-12-28 Marginal switching arrangement Expired ES361970A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BE708711 1967-12-29

Publications (1)

Publication Number Publication Date
ES361970A1 true ES361970A1 (en) 1970-11-16

Family

ID=3852072

Family Applications (1)

Application Number Title Priority Date Filing Date
ES361970A Expired ES361970A1 (en) 1967-12-29 1968-12-28 Marginal switching arrangement

Country Status (5)

Country Link
US (1) US3593035A (en)
BE (1) BE708711A (en)
ES (1) ES361970A1 (en)
GB (1) GB1246815A (en)
NL (1) NL6818685A (en)

Families Citing this family (6)

* 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
DE2605498C3 (en) * 1976-02-12 1983-11-03 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Circuit arrangement for generating a step-shaped pulse
US4144551A (en) * 1977-01-13 1979-03-13 Value Engineering Company Power interrupter device for an electrical distribution system
JPS6052380B2 (en) * 1977-12-20 1985-11-19 日本電気株式会社 Bipolar voltage detection circuit
DE2931901A1 (en) * 1979-08-07 1981-02-26 Licentia Gmbh Monolithic integrated logic threshold circuit - includes two differential amplifiers with paired transistors of complementary conduction type
KR910009557B1 (en) * 1987-03-31 1991-11-21 미쓰비시 뎅끼 가부시끼가이샤 Synchronizing signal processing circuit

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3139562A (en) * 1960-10-17 1964-06-30 Honeywell Regulator Co Voltage monitoring circuit
GB1095148A (en) * 1964-07-03 1967-12-13 Gen Electrical Company Ltd Improvements in or relating to electric circuit arrangements employing transistors
US3470497A (en) * 1966-11-09 1969-09-30 Felten & Guilleaume Gmbh Circuit arrangement for signalling the upper and lower limits of a voltage

Also Published As

Publication number Publication date
DE1815681A1 (en) 1969-08-21
NL6818685A (en) 1969-07-01
US3593035A (en) 1971-07-13
DE1815681B2 (en) 1973-02-08
BE708711A (en) 1968-07-01
GB1246815A (en) 1971-09-22

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