CA1060109A - Logarithmic frequency to voltage converter - Google Patents

Logarithmic frequency to voltage converter

Info

Publication number
CA1060109A
CA1060109A CA251,203A CA251203A CA1060109A CA 1060109 A CA1060109 A CA 1060109A CA 251203 A CA251203 A CA 251203A CA 1060109 A CA1060109 A CA 1060109A
Authority
CA
Canada
Prior art keywords
input
pulses
frequency
clock
digital
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
CA251,203A
Other languages
English (en)
French (fr)
Inventor
Anthony G. Chaprnka
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 Electric Corp
Original Assignee
Westinghouse Electric Corp
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 Electric Corp filed Critical Westinghouse Electric Corp
Application granted granted Critical
Publication of CA1060109A publication Critical patent/CA1060109A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06J—HYBRID COMPUTING ARRANGEMENTS
    • G06J1/00—Hybrid computing arrangements
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R23/00—Arrangements for measuring frequencies; Arrangements for analysing frequency spectra
    • G01R23/02—Arrangements for measuring frequency, e.g. pulse repetition rate; Arrangements for measuring period of current or voltage
    • G01R23/06—Arrangements for measuring frequency, e.g. pulse repetition rate; Arrangements for measuring period of current or voltage by converting frequency into an amplitude of current or voltage
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • H03M1/66—Digital/analogue converters
    • H03M1/664—Non-linear conversion not otherwise provided for in subgroups of H03M1/66
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • H03M1/66—Digital/analogue converters
    • H03M1/86—Digital/analogue converters with intermediate conversion to frequency of pulses

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Mathematical Physics (AREA)
  • Automation & Control Theory (AREA)
  • Evolutionary Computation (AREA)
  • Fuzzy Systems (AREA)
  • Software Systems (AREA)
  • Nonlinear Science (AREA)
  • Analogue/Digital Conversion (AREA)
CA251,203A 1975-05-29 1976-04-27 Logarithmic frequency to voltage converter Expired CA1060109A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/582,016 US3991301A (en) 1975-05-29 1975-05-29 Logarithmic frequency to voltage converter

Publications (1)

Publication Number Publication Date
CA1060109A true CA1060109A (en) 1979-08-07

Family

ID=24327500

Family Applications (1)

Application Number Title Priority Date Filing Date
CA251,203A Expired CA1060109A (en) 1975-05-29 1976-04-27 Logarithmic frequency to voltage converter

Country Status (3)

Country Link
US (1) US3991301A (Direct)
CA (1) CA1060109A (Direct)
FR (1) FR2312886A1 (Direct)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4101903A (en) * 1976-08-02 1978-07-18 Rockwell International Corporation Method and apparatus for monitoring bcd continuously varying data
US4089060A (en) * 1976-10-15 1978-05-09 Mitchell Donald K Digital logarithmic apparatus
GB2005500B (en) * 1977-09-26 1982-07-14 Burroughs Corp Video synthesizer for digital video display system employiing a plurality of gray-scale levels
DE2900192A1 (de) * 1979-01-04 1980-07-24 Bosch Gmbh Robert Frequenz-spannungs-wandler und spannungs-frequenz-wandler sowie ihre verwendung
DE3115497C2 (de) * 1981-04-16 1985-01-10 Dr. Johannes Heidenhain Gmbh, 8225 Traunreut Frequenz-Spannungswandler für ein Digital-Tachometer
US4484295A (en) * 1981-05-26 1984-11-20 General Electric Company Control circuit and method for varying the output of a waveform generator to gradually or rapidly vary a control signal from an initial value to a desired value
DE68912363T2 (de) * 1988-02-29 1994-07-28 Philips Nv Logarithmischer Verstärker.

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3426184A (en) * 1966-04-04 1969-02-04 Orion Research Logarithmic circuit
US3579127A (en) * 1967-05-31 1971-05-18 Gulf Energy & Environ Systems Apparatus for monitoring pulses
US3698631A (en) * 1970-11-19 1972-10-17 Bell Telephone Labor Inc Apparatus for generating a logarithmically related series of digitally coded signal quantities
JPS526586B2 (Direct) * 1972-02-02 1977-02-23
US3866024A (en) * 1973-10-23 1975-02-11 Scope Inc Digital log-time generator

Also Published As

Publication number Publication date
US3991301A (en) 1976-11-09
FR2312886B3 (Direct) 1979-02-16
FR2312886A1 (fr) 1976-12-24

Similar Documents

Publication Publication Date Title
US3836908A (en) Digital to analog converter
US3422423A (en) Digital-to-analog converter
CA1060109A (en) Logarithmic frequency to voltage converter
US3754233A (en) Digital-to-analog conversion apparatus and method
US2840806A (en) Voltage state to digital converter
US4573037A (en) Analog-to digital converter and method
CA1051120A (en) Analog-digital converter
US3277395A (en) Pluse width modulator
US3908181A (en) Predictive conversion between self-correlated analog signal and corresponding digital signal according to digital companded delta modulation
US3419819A (en) Encoder means having temperature-compensation apparatus included therein
US3648182A (en) Device for converting two magnitudes into a number of pulses proportional to the integral of their product
US3820111A (en) Analog-to-digital converter
US3497624A (en) Continuously compounded delta modulation
US2928900A (en) Multichannel pulse modulated data transmission system
US3631468A (en) Analog to digital converter
US4503549A (en) Interpolating function generator for transmitter square root extraction
GB1407475A (en) Circuit arrangement for analogue-digital conversion of magnitudes or signals in electrical form
US3461244A (en) Delta modulation system with continuously variable compander
US3824584A (en) Analog-digital converter circuit
US4389637A (en) Digital to analog converter
US3337862A (en) Electrical signalling systems
US3540034A (en) Code conversion system for converting analog input signals to trinary code output signals
US4400692A (en) Method for periodic digital to analog conversion
US4010422A (en) Transmitter for forming non-linear pulse code modulated samples of analog signals by timing the integral of signal samples
SU1372257A1 (ru) Устройство дл контрол пороговых уровней радиоэлектронных схем