FR2361693A1 - Generator of voltage dependent on value of regulating capacitor - has phase locked circuit with VCO and low-pass filter across phase comparator output - Google Patents

Generator of voltage dependent on value of regulating capacitor - has phase locked circuit with VCO and low-pass filter across phase comparator output

Info

Publication number
FR2361693A1
FR2361693A1 FR7723766A FR7723766A FR2361693A1 FR 2361693 A1 FR2361693 A1 FR 2361693A1 FR 7723766 A FR7723766 A FR 7723766A FR 7723766 A FR7723766 A FR 7723766A FR 2361693 A1 FR2361693 A1 FR 2361693A1
Authority
FR
France
Prior art keywords
pass filter
low
phase
generator
voltage
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Withdrawn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
FR7723766A
Other languages
French (fr)
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.)
ZF International UK Ltd
Original Assignee
Lucas Industries Ltd
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 Lucas Industries Ltd filed Critical Lucas Industries Ltd
Publication of FR2361693A1 publication Critical patent/FR2361693A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L7/00—Automatic control of frequency or phase; Synchronisation
    • H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
    • G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
    • G01R27/26—Measuring inductance or capacitance; Measuring quality factor, e.g. by using the resonance method; Measuring loss factor; Measuring dielectric constants ; Measuring impedance or related variables
    • G01R27/2605—Measuring capacitance

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
  • Control Of Electrical Variables (AREA)
  • Networks Using Active Elements (AREA)
  • Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)

Abstract

Generator of voltage dependent on capacitance value of regulating capacitor is used in regulating systems operating with convectors with variable capacitance. It comprises a phase locked circuit with a voltage controlled oscillator, a phase comparator and a low-pass filter across the output of the phase comparator. The output of the voltage regulated oscillator is compared with an A.C. signal. The low-pass filter supplies both an output signal and a regulating voltage signal for the voltage regulated oscillator. The integrated circuit contains a voltage regulated oscillator, two phase comparators, a source tap and an automatic bias.
FR7723766A 1976-08-10 1977-08-02 Generator of voltage dependent on value of regulating capacitor - has phase locked circuit with VCO and low-pass filter across phase comparator output Withdrawn FR2361693A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3319276 1976-08-10

Publications (1)

Publication Number Publication Date
FR2361693A1 true FR2361693A1 (en) 1978-03-10

Family

ID=10349770

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7723766A Withdrawn FR2361693A1 (en) 1976-08-10 1977-08-02 Generator of voltage dependent on value of regulating capacitor - has phase locked circuit with VCO and low-pass filter across phase comparator output

Country Status (4)

Country Link
JP (1) JPS5320553A (en)
DE (1) DE2735794A1 (en)
FR (1) FR2361693A1 (en)
IT (1) IT1085605B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2679663A1 (en) * 1991-07-25 1993-01-29 Jalco Co Ltd METHOD FOR DETECTING AN ELECTRICAL CAPACITY VARIATION

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT391032B (en) * 1982-10-28 1990-08-10 Stolllack Ag Method for measuring the insulating materials loss factor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2679663A1 (en) * 1991-07-25 1993-01-29 Jalco Co Ltd METHOD FOR DETECTING AN ELECTRICAL CAPACITY VARIATION

Also Published As

Publication number Publication date
JPS5320553A (en) 1978-02-24
DE2735794A1 (en) 1978-02-23
IT1085605B (en) 1985-05-28

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Legal Events

Date Code Title Description
ST Notification of lapse