GB1109810A - Improvements in or relating to resonant circuits - Google Patents

Improvements in or relating to resonant circuits

Info

Publication number
GB1109810A
GB1109810A GB5410666A GB5410666A GB1109810A GB 1109810 A GB1109810 A GB 1109810A GB 5410666 A GB5410666 A GB 5410666A GB 5410666 A GB5410666 A GB 5410666A GB 1109810 A GB1109810 A GB 1109810A
Authority
GB
United Kingdom
Prior art keywords
tuning
diode
resonant circuits
relating
voltage
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
GB5410666A
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.)
TDK Micronas GmbH
ITT Inc
Original Assignee
Deutsche ITT Industries GmbH
ITT Industries Inc
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 Deutsche ITT Industries GmbH, ITT Industries Inc filed Critical Deutsche ITT Industries GmbH
Publication of GB1109810A publication Critical patent/GB1109810A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J3/00—Continuous tuning
    • H03J3/28—Continuous tuning of more than one resonant circuit simultaneously, the tuning frequencies of the circuits having a substantially constant difference throughout the tuning range
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J3/00—Continuous tuning
    • H03J3/02—Details
    • H03J3/16—Tuning without displacement of reactive element, e.g. by varying permeability
    • H03J3/18—Tuning without displacement of reactive element, e.g. by varying permeability by discharge tube or semiconductor device simulating variable reactance
    • H03J3/185—Tuning without displacement of reactive element, e.g. by varying permeability by discharge tube or semiconductor device simulating variable reactance with varactors, i.e. voltage variable reactive diodes

Landscapes

  • Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
  • Ignition Installations For Internal Combustion Engines (AREA)

Abstract

1,109,810. Tuning arrangements. ITT INDUSTRIES Inc. 2 Dec., 1966 [3 Dec., 1965], No. 54106/66. Heading H3Q. For tuning two or more resonant circuits with capacitance diodes so as to preserve a constant frequency difference between the circuits, one diode D3 (Fig. 2) is fed with an adjustable voltage from R8 for tuning and a fraction of this voltage is applied to the other diode D4 through a voltage divider comprising a threshold diode D5 (e.g. Zener) and an ohmic resistor R6/7. The value of the frequency difference is controlled by R6.
GB5410666A 1965-12-03 1966-12-02 Improvements in or relating to resonant circuits Expired GB1109810A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEJ0029510 1965-12-03

Publications (1)

Publication Number Publication Date
GB1109810A true GB1109810A (en) 1968-04-18

Family

ID=7203623

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5410666A Expired GB1109810A (en) 1965-12-03 1966-12-02 Improvements in or relating to resonant circuits

Country Status (3)

Country Link
BE (1) BE690661A (en)
FR (1) FR1503159A (en)
GB (1) GB1109810A (en)

Also Published As

Publication number Publication date
FR1503159A (en) 1967-11-24
BE690661A (en) 1967-06-05

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