GB587319A - Piezo-electric oscillation generator - Google Patents

Piezo-electric oscillation generator

Info

Publication number
GB587319A
GB587319A GB18682/44A GB1868244A GB587319A GB 587319 A GB587319 A GB 587319A GB 18682/44 A GB18682/44 A GB 18682/44A GB 1868244 A GB1868244 A GB 1868244A GB 587319 A GB587319 A GB 587319A
Authority
GB
United Kingdom
Prior art keywords
crystal
piezo
tuned
valve
tuned circuit
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
GB18682/44A
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 GB587319A publication Critical patent/GB587319A/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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/34—Negative-feedback-circuit arrangements with or without positive feedback
    • H03F1/36—Negative-feedback-circuit arrangements with or without positive feedback in discharge-tube amplifiers

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Oscillators With Electromechanical Resonators (AREA)

Abstract

587,319. Valve generating circuits. STANDARD TELEPHONES & CABLES, Ltd. Sept. 29, 1944, No. 18682. Convention date, Nov. 9, 1943. [Class 40 (v)] A crystal-controlled valve oscillator has a tuned circuit connecting the anode to the control grid, and a piezo-electric crystal connecting the tuned circuit to the cathode. The Figure shows the crystal 12 connected between the cathode 13 of valve 1 and the centre point of a split capacity branch in circuit 5, "10, 11, which is tuned to a resonance frequency of the crystal. Alternatively, the connection to the tuned circuit may be made at the mid-point of inductor 5, and a resistor may be inserted in series with the crystal to reduce the net effective positive feed-back.
GB18682/44A 1943-11-09 1944-09-29 Piezo-electric oscillation generator Expired GB587319A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US587319XA 1943-11-09 1943-11-09

Publications (1)

Publication Number Publication Date
GB587319A true GB587319A (en) 1947-04-22

Family

ID=22018586

Family Applications (1)

Application Number Title Priority Date Filing Date
GB18682/44A Expired GB587319A (en) 1943-11-09 1944-09-29 Piezo-electric oscillation generator

Country Status (1)

Country Link
GB (1) GB587319A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1034414B (en) * 1955-03-21 1958-07-17 Ethyl Corp Anti-knock mixture for gasoline fuels

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1034414B (en) * 1955-03-21 1958-07-17 Ethyl Corp Anti-knock mixture for gasoline fuels

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