GB1076822A - Improvements in or relating to frequency modulation oscillators - Google Patents

Improvements in or relating to frequency modulation oscillators

Info

Publication number
GB1076822A
GB1076822A GB2129964A GB2129964A GB1076822A GB 1076822 A GB1076822 A GB 1076822A GB 2129964 A GB2129964 A GB 2129964A GB 2129964 A GB2129964 A GB 2129964A GB 1076822 A GB1076822 A GB 1076822A
Authority
GB
United Kingdom
Prior art keywords
frequency modulation
inductance
parallel
oscillator
relating
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
GB2129964A
Inventor
Czeslaw Teodor Kohn
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.)
NORBURY INSTR Ltd
Original Assignee
NORBURY INSTR Ltd
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 NORBURY INSTR Ltd filed Critical NORBURY INSTR Ltd
Priority to GB2129964A priority Critical patent/GB1076822A/en
Publication of GB1076822A publication Critical patent/GB1076822A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C3/00—Angle modulation
    • H03C3/10—Angle modulation by means of variable impedance
    • H03C3/12—Angle modulation by means of variable impedance by means of a variable reactive element
    • H03C3/22—Angle modulation by means of variable impedance by means of a variable reactive element the element being a semiconductor diode, e.g. varicap diode

Landscapes

  • Oscillators With Electromechanical Resonators (AREA)

Abstract

1,076,822. Frequency modulation. NORBURY INSTRUMENTS Ltd. Aug. 18, 1965 [May 22, 1964], No. 21299/64. Heading H3R. A frequency modulation oscillator comprises the series combination of three units: (a) a crystal (XL 1 ) with a parallel inductance (L1) to tune out the capacitance of the crystal; (b) an inductance (L3) in parallel with a pair of varactor diodes (D1 and D2) to the junction of which the modulating voltage is applied; and (c) an inductance (L2) which is adjustable by means of a movable core or by a parallel variable capacitor (C1) to alter the centre frequency of the oscillator; the three units being connected between the output and input of an amplifier. The oscillator may be located in a temperaturecontrolled oven.
GB2129964A 1964-05-22 1964-05-22 Improvements in or relating to frequency modulation oscillators Expired GB1076822A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2129964A GB1076822A (en) 1964-05-22 1964-05-22 Improvements in or relating to frequency modulation oscillators

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2129964A GB1076822A (en) 1964-05-22 1964-05-22 Improvements in or relating to frequency modulation oscillators

Publications (1)

Publication Number Publication Date
GB1076822A true GB1076822A (en) 1967-07-26

Family

ID=10160550

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2129964A Expired GB1076822A (en) 1964-05-22 1964-05-22 Improvements in or relating to frequency modulation oscillators

Country Status (1)

Country Link
GB (1) GB1076822A (en)

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