DK119618B - Kredsløb til styring af resonansfrekvensen for en piezoelektrisk krystal. - Google Patents

Kredsløb til styring af resonansfrekvensen for en piezoelektrisk krystal.

Info

Publication number
DK119618B
DK119618B DK278768A DK278768A DK119618B DK 119618 B DK119618 B DK 119618B DK 278768 A DK278768 A DK 278768A DK 278768 A DK278768 A DK 278768A DK 119618 B DK119618 B DK 119618B
Authority
DK
Denmark
Prior art keywords
circuits
controlling
resonant frequency
piezoelectric crystal
piezoelectric
Prior art date
Application number
DK278768A
Other languages
English (en)
Inventor
D Bridges
Original Assignee
Decca 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 Decca Ltd filed Critical Decca Ltd
Publication of DK119618B publication Critical patent/DK119618B/da

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H3/00—Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators
    • H03H3/007—Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators for the manufacture of electromechanical resonators or networks
    • H03H3/02—Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators for the manufacture of electromechanical resonators or networks for the manufacture of piezoelectric or electrostrictive resonators or networks
    • H03H3/04—Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators for the manufacture of electromechanical resonators or networks for the manufacture of piezoelectric or electrostrictive resonators or networks for obtaining desired frequency or temperature coefficient
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
    • G01H13/00—Measuring resonant frequency
    • 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
    • H03B5/30—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator
    • H03B5/32—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator being a piezoelectric resonator
    • H03B5/36—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator being a piezoelectric resonator active element in amplifier being semiconductor device
    • H03B5/366—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator being a piezoelectric resonator active element in amplifier being semiconductor device and comprising means for varying the frequency by a variable voltage or current
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L1/00—Stabilisation of generator output against variations of physical values, e.g. power supply
    • H03L1/02—Stabilisation of generator output against variations of physical values, e.g. power supply against variations of temperature only
    • H03L1/022—Stabilisation of generator output against variations of physical values, e.g. power supply against variations of temperature only by indirect stabilisation, i.e. by generating an electrical correction signal which is a function of the temperature
    • H03L1/023—Stabilisation of generator output against variations of physical values, e.g. power supply against variations of temperature only by indirect stabilisation, i.e. by generating an electrical correction signal which is a function of the temperature by using voltage variable capacitance diodes
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L1/00—Stabilisation of generator output against variations of physical values, e.g. power supply
    • H03L1/02—Stabilisation of generator output against variations of physical values, e.g. power supply against variations of temperature only
    • H03L1/028—Stabilisation of generator output against variations of physical values, e.g. power supply against variations of temperature only of generators comprising piezoelectric resonators

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Polyurethanes Or Polyureas (AREA)
  • Position Fixing By Use Of Radio Waves (AREA)
  • Oscillators With Electromechanical Resonators (AREA)
  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
DK278768A 1967-06-16 1968-06-14 Kredsløb til styring af resonansfrekvensen for en piezoelektrisk krystal. DK119618B (da)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2784467A GB1163064A (en) 1967-06-16 1967-06-16 Circuits for Controlling the Resonant Frequency of a Piezo-Electric Crystal or the like.

Publications (1)

Publication Number Publication Date
DK119618B true DK119618B (da) 1971-02-01

Family

ID=10266224

Family Applications (1)

Application Number Title Priority Date Filing Date
DK278768A DK119618B (da) 1967-06-16 1968-06-14 Kredsløb til styring af resonansfrekvensen for en piezoelektrisk krystal.

Country Status (6)

Country Link
JP (1) JPS4842751B1 (da)
DK (1) DK119618B (da)
FR (1) FR1568658A (da)
GB (1) GB1163064A (da)
NL (1) NL150969B (da)
NO (1) NO128138B (da)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2233513A (en) * 1989-06-09 1991-01-09 Philips Electronic Associated Oscillators

Also Published As

Publication number Publication date
JPS4842751B1 (da) 1973-12-14
NL6808392A (da) 1968-12-17
FR1568658A (da) 1969-05-23
GB1163064A (en) 1969-09-04
NL150969B (nl) 1976-09-15
NO128138B (da) 1973-10-01

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