GB806080A - Circuits for generating harmonic frequency spectrums - Google Patents

Circuits for generating harmonic frequency spectrums

Info

Publication number
GB806080A
GB806080A GB22158/57A GB2215857A GB806080A GB 806080 A GB806080 A GB 806080A GB 22158/57 A GB22158/57 A GB 22158/57A GB 2215857 A GB2215857 A GB 2215857A GB 806080 A GB806080 A GB 806080A
Authority
GB
United Kingdom
Prior art keywords
frequency
oscillator
control valve
circuits
harmonic
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
GB22158/57A
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 GB806080A publication Critical patent/GB806080A/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
    • H03B19/00—Generation of oscillations by non-regenerative frequency multiplication or division of a signal from a separate source
    • H03B19/06—Generation of oscillations by non-regenerative frequency multiplication or division of a signal from a separate source by means of discharge device or semiconductor device with more than two electrodes
    • H03B19/08—Generation of oscillations by non-regenerative frequency multiplication or division of a signal from a separate source by means of discharge device or semiconductor device with more than two electrodes by means of a discharge device
    • H03B19/10—Generation of oscillations by non-regenerative frequency multiplication or division of a signal from a separate source by means of discharge device or semiconductor device with more than two electrodes by means of a discharge device using multiplication only

Landscapes

  • Noise Elimination (AREA)

Abstract

806,080. Harmonic generator circuits. STANDARD TELEPHONES & CABLES Ltd. July 12, 1957 [July 16, 1956], No. 22158/57. Class 40 (6). A circuit for generating a spectrum of harmonies of a frequency F comprises an inductance-capacitance oscillator V2, part of the inductance being included in the cathode circuit of a control valve V1 and a signal of the frequency f, in the form of short negative pulses, being applied to the grid of the control valve to render the control valve periodically non- conductive and so modulate the oscillator. By this means the oscillator may be synchronized with a harmonic of the frequency f and a harmonic spectrum centred at the oscillator frequency is produced. A rectifier is provided to prevent the grid voltage of valve V1 from overswinging into the positive region at the end of the pulses.
GB22158/57A 1956-07-16 1957-07-12 Circuits for generating harmonic frequency spectrums Expired GB806080A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH806080X 1956-07-16

Publications (1)

Publication Number Publication Date
GB806080A true GB806080A (en) 1958-12-17

Family

ID=4538072

Family Applications (1)

Application Number Title Priority Date Filing Date
GB22158/57A Expired GB806080A (en) 1956-07-16 1957-07-12 Circuits for generating harmonic frequency spectrums

Country Status (1)

Country Link
GB (1) GB806080A (en)

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