GB527649A - Tuning arrangement for oscillatory circuits - Google Patents

Tuning arrangement for oscillatory circuits

Info

Publication number
GB527649A
GB527649A GB11631/39A GB1163139A GB527649A GB 527649 A GB527649 A GB 527649A GB 11631/39 A GB11631/39 A GB 11631/39A GB 1163139 A GB1163139 A GB 1163139A GB 527649 A GB527649 A GB 527649A
Authority
GB
United Kingdom
Prior art keywords
frequency
tube
inductance
circuit
april
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
GB11631/39A
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.)
LADISLAS DE KRAMOLIN
Original Assignee
LADISLAS DE KRAMOLIN
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 LADISLAS DE KRAMOLIN filed Critical LADISLAS DE KRAMOLIN
Publication of GB527649A publication Critical patent/GB527649A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/34—DC amplifiers in which all stages are DC-coupled
    • H03F3/36—DC amplifiers in which all stages are DC-coupled with tubes only
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J3/00—Continuous tuning
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/06—Receivers
    • H04B1/16—Circuits
    • H04B1/26—Circuits for superheterodyne receivers

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Lasers (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)

Abstract

527,649. Valve circuits; wireless receiving apparatus. KRAMOLIN, L. DE. April 17, 1939, No. 11631. Convention date, April 30, 1938. [Class 40 (v)] The resonant frequency of a high frequency circuit is varied by varying the direct current component of the discharge path of a gas or vapour-discharge tube acting as a variable inductance in the said circuit. In the Figure, the neon tube V<SP>1</SP> is connected across the inductance L of the frequency determining circuit of an oscillator V2 back-coupled at L1. The inductive effect of V1 is varied by varying its discharge current by means of a slider on potentiometer R. The condensers Cl, C2 are so chosen that sawtooth oscillations at any frequency near to the working frequency are not set up ; the tube is also shunted by an inductance for that purpose. The tube may itself act as an oscillator and its oscillating properties at high frequencies may be stimulated by using a gas filling of low atomic weight, e.g. hydrogen ; or a separate auxiliary amplifier may be provided. The invention is specially applicable to remote control of tuning and automatic frequency and selectivity control. Specifications 386,356 and 408,943 are referred to.
GB11631/39A 1938-04-30 1939-04-17 Tuning arrangement for oscillatory circuits Expired GB527649A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE527649X 1938-04-30

Publications (1)

Publication Number Publication Date
GB527649A true GB527649A (en) 1940-10-14

Family

ID=6553383

Family Applications (1)

Application Number Title Priority Date Filing Date
GB11631/39A Expired GB527649A (en) 1938-04-30 1939-04-17 Tuning arrangement for oscillatory circuits

Country Status (2)

Country Link
US (1) US2264661A (en)
GB (1) GB527649A (en)

Also Published As

Publication number Publication date
US2264661A (en) 1941-12-02

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