CA959132A - Fail-safe electronic comparator circuit - Google Patents

Fail-safe electronic comparator circuit

Info

Publication number
CA959132A
CA959132A CA134,900A CA134900A CA959132A CA 959132 A CA959132 A CA 959132A CA 134900 A CA134900 A CA 134900A CA 959132 A CA959132 A CA 959132A
Authority
CA
Canada
Prior art keywords
fail
comparator circuit
safe electronic
electronic comparator
safe
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
CA134,900A
Other languages
English (en)
Other versions
CA134900S (fr
Inventor
John O.G. Darrow
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.)
Westinghouse Air Brake Co
Original Assignee
Westinghouse Air Brake Co
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 Westinghouse Air Brake Co filed Critical Westinghouse Air Brake Co
Application granted granted Critical
Publication of CA959132A publication Critical patent/CA959132A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H03K5/24—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 the characteristic being amplitude
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
    • H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
    • H03B5/08—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance
    • H03B5/12—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device
    • H03B5/1206—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device using multiple transistors for amplification
    • H03B5/1212—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device using multiple transistors for amplification the amplifier comprising a pair of transistors, wherein an output terminal of each being connected to an input terminal of the other, e.g. a cross coupled pair
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
    • H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
    • H03B5/08—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance
    • H03B5/12—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device
    • H03B5/1231—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device the amplifier comprising one or more bipolar transistors
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
    • H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
    • H03B5/08—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance
    • H03B5/12—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device
    • H03B5/1296—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device the feedback circuit comprising a transformer

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Inverter Devices (AREA)
  • Manipulation Of Pulses (AREA)
CA134,900A 1971-03-15 1972-02-17 Fail-safe electronic comparator circuit Expired CA959132A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US12437471A 1971-03-15 1971-03-15

Publications (1)

Publication Number Publication Date
CA959132A true CA959132A (en) 1974-12-10

Family

ID=22414483

Family Applications (1)

Application Number Title Priority Date Filing Date
CA134,900A Expired CA959132A (en) 1971-03-15 1972-02-17 Fail-safe electronic comparator circuit

Country Status (4)

Country Link
US (1) US3747014A (fr)
AU (1) AU3694271A (fr)
CA (1) CA959132A (fr)
GB (1) GB1315109A (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3950690A (en) * 1973-11-19 1976-04-13 Westinghouse Air Brake Company Fail-safe reference voltage source
US4044272A (en) * 1976-08-12 1977-08-23 Westinghouse Air Brake Company Fail-safe electronic time delay circuit
US4320315A (en) * 1979-04-20 1982-03-16 American Standard Inc. Fail-safe and gate circuit

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2589240A (en) * 1945-04-07 1952-03-18 William E Frye Double pulse generator
NL239629A (fr) * 1958-05-28
US3046535A (en) * 1959-02-02 1962-07-24 Cutler Hammer Inc Measurement apparatus
US3161785A (en) * 1960-06-20 1964-12-15 Stevens Arnold Inc Electromagnetic switches
GB1026894A (en) * 1964-11-25 1966-04-20 Mullard Ltd Improvements in or relating to astable multivibrator circuit arrangements
GB1067969A (en) * 1965-06-16 1967-05-10 Dynatel Ltd Improvements in or relating to voltage-controlled oscillators
US3401274A (en) * 1965-09-10 1968-09-10 Westinghouse Air Brake Co Fail-safe standard amplitude signal sources
US3382457A (en) * 1967-01-03 1968-05-07 Sperry Rand Corp Wide band voltage controlled multivibrator

Also Published As

Publication number Publication date
US3747014A (en) 1973-07-17
GB1315109A (en) 1973-04-26
AU3694271A (en) 1973-06-21
AU460471B2 (fr) 1975-04-24

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