SE333168B - DEVICE FOR RESTRICTING TEMPERATURE CHANGES CAUSED FREQUENCY VARIATIONS IN A COUPLING CONTAINING PIEZOELECTRIC CRYSTALS - Google Patents

DEVICE FOR RESTRICTING TEMPERATURE CHANGES CAUSED FREQUENCY VARIATIONS IN A COUPLING CONTAINING PIEZOELECTRIC CRYSTALS

Info

Publication number
SE333168B
SE333168B SE1255/67A SE125567A SE333168B SE 333168 B SE333168 B SE 333168B SE 1255/67 A SE1255/67 A SE 1255/67A SE 125567 A SE125567 A SE 125567A SE 333168 B SE333168 B SE 333168B
Authority
SE
Sweden
Prior art keywords
crystals
temperature changes
changes caused
frequency variations
piezoelectric crystals
Prior art date
Application number
SE1255/67A
Other languages
Swedish (sv)
Inventor
D Fewings
D Fairweather
Original Assignee
Marconi Co 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 Marconi Co Ltd filed Critical Marconi Co Ltd
Publication of SE333168B publication Critical patent/SE333168B/en

Links

Classifications

    • 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
    • H03B5/362—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 the amplifier being a single transistor
    • 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

  • Oscillators With Electromechanical Resonators (AREA)
  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)

Abstract

1,117,343. Transistor oscillating circuits. MARCONI CO. Ltd. 2 Dec., 1966 [28 Jan., 1966; 30 Sept., 1966], Nos. 3944/66 and 43834/66. Heading H3T. A piezo-electric circuit arrangement is stabilized against change of frequency when the temperature changes by connecting in parallel two or more crystals each having an approximately parabolic frequency-temperature characteristic, the individual " turnover " temperatures occurring at substantially the same frequency but at different temperatures spaced apart in a temperature range to be covered. If necessary inductances L1, L2 or capacitances may be connected in series with the crystals, as shown, two in number A, B, in order to equalize their " turnover " frequencies. The Specification refers to the use of crystals of BT or RT cut.
SE1255/67A 1966-01-28 1967-01-27 DEVICE FOR RESTRICTING TEMPERATURE CHANGES CAUSED FREQUENCY VARIATIONS IN A COUPLING CONTAINING PIEZOELECTRIC CRYSTALS SE333168B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB3944/66A GB1117343A (en) 1966-01-28 1966-01-28 Improvements in or relating to piezo-electric crystal circuit arrangements
GB4383466 1966-09-30

Publications (1)

Publication Number Publication Date
SE333168B true SE333168B (en) 1971-03-08

Family

ID=26238712

Family Applications (1)

Application Number Title Priority Date Filing Date
SE1255/67A SE333168B (en) 1966-01-28 1967-01-27 DEVICE FOR RESTRICTING TEMPERATURE CHANGES CAUSED FREQUENCY VARIATIONS IN A COUPLING CONTAINING PIEZOELECTRIC CRYSTALS

Country Status (5)

Country Link
US (1) US3463945A (en)
DE (1) DE1591261B1 (en)
GB (1) GB1117343A (en)
NL (1) NL6701242A (en)
SE (1) SE333168B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5340855B2 (en) * 1972-04-03 1978-10-30
GB1430398A (en) * 1972-12-29 1976-03-31 Onoe M Temperature compensation piezoelectric oscillator
US4079280A (en) * 1976-06-02 1978-03-14 Hewlett-Packard Company Quartz resonator cut to compensate for static and dynamic thermal transients
US5004987A (en) * 1989-05-19 1991-04-02 Piezo Crystal Company Temperature compensated crystal resonator found in a dual-mode oscillator
US5041800A (en) * 1989-05-19 1991-08-20 Ppa Industries, Inc. Lower power oscillator with heated resonator (S), with dual mode or other temperature sensing, possibly with an insulative support structure disposed between the resonator (S) and a resonator enclosure
EP0469193A1 (en) * 1990-08-03 1992-02-05 Koninklijke Philips Electronics N.V. Temperature stabilized crystal oscillator

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1915368A (en) * 1928-08-08 1933-06-27 Bell Telephone Labor Inc Oscillator
US1827196A (en) * 1929-05-01 1931-10-13 Bell Telephone Labor Inc Piezo electric oscillator
US3175168A (en) * 1958-12-15 1965-03-23 Kinsekisha Lab Ltd Crystal-controlled transistor oscillator having minimum frequency deviation with temperature variation
GB959565A (en) * 1959-11-24 1964-06-03 Cossor Ltd A C Improvements in and relating to the location and repair of faults in electrical conductors
US3152295A (en) * 1961-05-01 1964-10-06 Bendix Corp Pulsed tank circuit magneto-or electrostrictive device excitation
NL295717A (en) * 1962-07-27
US3260960A (en) * 1962-08-06 1966-07-12 Bendix Corp Oscillator with dual function isolation amplifier and frequency determining transistor
US3181045A (en) * 1963-01-07 1965-04-27 Irwin M Bruntil Tuning variable capacitor
US3349348A (en) * 1963-01-10 1967-10-24 Automatic Elect Lab Temperature-compensated circuit arrangement
US3322981A (en) * 1964-04-29 1967-05-30 Gen Electric Crystal temperature compensation
US3370255A (en) * 1965-10-18 1968-02-20 Collins Radio Co Fm system using crystal oscillator
US3297961A (en) * 1965-10-18 1967-01-10 Collins Radio Co Means for tuning crystal oscillator

Also Published As

Publication number Publication date
DE1591261B1 (en) 1970-08-27
GB1117343A (en) 1968-06-19
NL6701242A (en) 1967-07-31
US3463945A (en) 1969-08-26

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