GB757063A - Improvements in or relating to crystal-controlled oscillators - Google Patents

Improvements in or relating to crystal-controlled oscillators

Info

Publication number
GB757063A
GB757063A GB33292/54A GB3329254A GB757063A GB 757063 A GB757063 A GB 757063A GB 33292/54 A GB33292/54 A GB 33292/54A GB 3329254 A GB3329254 A GB 3329254A GB 757063 A GB757063 A GB 757063A
Authority
GB
United Kingdom
Prior art keywords
crystal
current
nov
relating
controlled oscillators
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
GB33292/54A
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.)
Philips Electrical Industries Ltd
Original Assignee
Philips Electrical 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 Philips Electrical Industries Ltd filed Critical Philips Electrical Industries Ltd
Publication of GB757063A publication Critical patent/GB757063A/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

  • Apparatuses For Generation Of Mechanical Vibrations (AREA)
  • Oscillators With Electromechanical Resonators (AREA)

Abstract

757,063. Valve oscillators; protecting valve circuits. PHILIPS ELECTRICAL INDUSTRIES, Ltd. Nov. 17, 1954 [Nov. 20, 1953], No. 33292/54. Class 40 (6). In a crystal-controlled oscillator an asymmetrically conductive device GR is connected in series with the crystal K, the device being biased by a current substantially equal to the maximum permissible crystal current, to limit the maximum current to this value. The bias current may be obtained from the H.T. supply or as shown from a separate supply E. Flattening of the peaks of the oscillatory voltage is prevented by the selective properties of the crystal.
GB33292/54A 1953-11-20 1954-11-17 Improvements in or relating to crystal-controlled oscillators Expired GB757063A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL757063X 1953-11-20

Publications (1)

Publication Number Publication Date
GB757063A true GB757063A (en) 1956-09-12

Family

ID=19825310

Family Applications (1)

Application Number Title Priority Date Filing Date
GB33292/54A Expired GB757063A (en) 1953-11-20 1954-11-17 Improvements in or relating to crystal-controlled oscillators

Country Status (3)

Country Link
BE (1) BE533481A (en)
GB (1) GB757063A (en)
NL (1) NL182998B (en)

Also Published As

Publication number Publication date
BE533481A (en)
NL182998B (en)

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