GB279845A - Devices for generating electrical oscillations by means of piezo electrical crystals - Google Patents

Devices for generating electrical oscillations by means of piezo electrical crystals

Info

Publication number
GB279845A
GB279845A GB28200/27A GB2820027A GB279845A GB 279845 A GB279845 A GB 279845A GB 28200/27 A GB28200/27 A GB 28200/27A GB 2820027 A GB2820027 A GB 2820027A GB 279845 A GB279845 A GB 279845A
Authority
GB
United Kingdom
Prior art keywords
coil
piezo
oscillations
electrical
devices
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
GB28200/27A
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.)
RADIOFREQUENZ GmbH
Original Assignee
RADIOFREQUENZ GmbH
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 RADIOFREQUENZ GmbH filed Critical RADIOFREQUENZ GmbH
Publication of GB279845A publication Critical patent/GB279845A/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

279,845. Radiofrequenz Ges., and Eberhard, H. Oct. 26, 1926, [Convention date]. Thermionic generators.- In a piezo-electrically-controlled oscillator a quartz crystal 9 is connected between the grid 3 and an intermediate point 10 of an inductive impedance in the plate-filament circuit. Oscillations are generated at the natural frequency of the crystal when tho upper coil or coil section 7 has approximately that resonance frequency. A small variable condenser may be connected across the coil 7. The coil 8 should be of large inductance compared with the coil 7.
GB28200/27A 1926-10-26 1927-10-24 Devices for generating electrical oscillations by means of piezo electrical crystals Expired GB279845A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE279845X 1926-10-26

Publications (1)

Publication Number Publication Date
GB279845A true GB279845A (en) 1929-01-24

Family

ID=6028798

Family Applications (1)

Application Number Title Priority Date Filing Date
GB28200/27A Expired GB279845A (en) 1926-10-26 1927-10-24 Devices for generating electrical oscillations by means of piezo electrical crystals

Country Status (1)

Country Link
GB (1) GB279845A (en)

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