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GB537167A - Crystal-controlled oscillator - Google Patents

Crystal-controlled oscillator

Info

Publication number
GB537167A
GB537167A GB7798/40A GB779840A GB537167A GB 537167 A GB537167 A GB 537167A GB 7798/40 A GB7798/40 A GB 7798/40A GB 779840 A GB779840 A GB 779840A GB 537167 A GB537167 A GB 537167A
Authority
GB
United Kingdom
Prior art keywords
condenser
crystal
controlled oscillator
dial
inductance
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
GB7798/40A
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.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
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 Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Publication of GB537167A publication Critical patent/GB537167A/en
Expired legal-status Critical Current

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
    • H03B5/34—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 vacuum tube

Landscapes

  • Oscillators With Electromechanical Resonators (AREA)

Abstract

537,167. Valve generating circuits. STANDARD TELEPHONES & CABLES, Ltd. April 30, 1940, No. 7798. Convention date, May 3, 1939. [Class 40 (v)] In a crystal-controlled oscillator having a trimming impedance, e.g. condenser Cl, for slightly changing the frequency generated, and additional impedance, e.g. an inductance L1 which may be shunted by a condenser C2, is so dimensioned that variation of the trimming impedance results in a linear percentage change of the frequency generated, as indicated upon the dial S. A condenser C3 in parallel with Cl serves to adjust the zero of the dial at the desired nominal frequency. Alternatively, the inductance L1 may be in series with the condenser Cl. The invention is particularly useful for ultra-high frequency generators.
GB7798/40A 1939-05-03 1940-04-30 Crystal-controlled oscillator Expired GB537167A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US537167XA 1939-05-03 1939-05-03

Publications (1)

Publication Number Publication Date
GB537167A true GB537167A (en) 1941-06-11

Family

ID=21986058

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7798/40A Expired GB537167A (en) 1939-05-03 1940-04-30 Crystal-controlled oscillator

Country Status (1)

Country Link
GB (1) GB537167A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE936153C (en) * 1943-05-06 1955-12-07 Philips Nv Circuit for influencing the natural frequency of an oscillating circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE936153C (en) * 1943-05-06 1955-12-07 Philips Nv Circuit for influencing the natural frequency of an oscillating circuit

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