GB670238A - Improvements in or relating to automatic frequency control circuit arrangements - Google Patents

Improvements in or relating to automatic frequency control circuit arrangements

Info

Publication number
GB670238A
GB670238A GB769848A GB769848A GB670238A GB 670238 A GB670238 A GB 670238A GB 769848 A GB769848 A GB 769848A GB 769848 A GB769848 A GB 769848A GB 670238 A GB670238 A GB 670238A
Authority
GB
United Kingdom
Prior art keywords
output
klystron
frequency
circuit
power
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
GB769848A
Inventor
Stanley Ratcliffe
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.)
Minister of Supply In Her Majesty S Government
Original Assignee
Minister of Supply In Her Majesty S Government
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 Minister of Supply In Her Majesty S Government filed Critical Minister of Supply In Her Majesty S Government
Priority to GB769848A priority Critical patent/GB670238A/en
Publication of GB670238A publication Critical patent/GB670238A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L7/00—Automatic control of frequency or phase; Synchronisation
    • H03L7/02—Automatic control of frequency or phase; Synchronisation using a frequency discriminator comprising a passive frequency-determining element
    • H03L7/04—Automatic control of frequency or phase; Synchronisation using a frequency discriminator comprising a passive frequency-determining element wherein the frequency-determining element comprises distributed inductance and capacitance

Landscapes

  • Control Of Motors That Do Not Use Commutators (AREA)

Abstract

670,238. Automatic frequency control systems. MINISTER OF SUPPLY. April 11, 1949 [March 13, 1948], No. 7698/48. Class 38 (iv). The frequency of an oscillator is automatically controlled by a voltage applied to the frequency controlling electrode of the oscillator valve and by an adjustment of the dimensions of a resonant cavity, the arrangement being such that the power in the output of the valve is maintained at the optimum or a desired level. As shown, the frequency of klystron 2 is controlled by a voltage developed in example in response to the output from the discriminator 5 and applied to the reflector electrode, and by adjustment of the dimensions of the rhumbatron by motor 8 under the control of the circuit chain 11-16 which is responsive to the output of the mixer 3 and hence the power in the output of the klystron. The direction of rotation of the cavity controlling motor 8 is determined by the output of mixer 3. When the frequency is outside a predetermined range, the discriminator 5 provides no output and the motor 8 is connected to the search circuit 9 until when tuning falls within the range, discriminator 5 operates switch 17 to connect 8 to a stepper circuit 10 after which tuning to the desired frequency within the range is effected in steps, provision being made to reverse stepping under the control of a relay 16 and multivibrators 12, 15 after passing through the point of optimum power. In a further embodiment, as applied to a superheterodyne receiver the intermediate frequency signals derived from a mixer are applied to a discriminator circuit, the output of which is applied, through an integrating circuit to the grid of a further valve which energizes the klystron reflector electrode. In addition, the output of the mixer which is also representative of the power in the klystron, after comparison with a datum current is applied simultaneously to both the control grid of the klystron, the power output of which is regulated, and to a trigger circuit which controls the direction of rotation of the motor which adjusts the klystron resonant cavity.
GB769848A 1948-03-13 1948-03-13 Improvements in or relating to automatic frequency control circuit arrangements Expired GB670238A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB769848A GB670238A (en) 1948-03-13 1948-03-13 Improvements in or relating to automatic frequency control circuit arrangements

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB769848A GB670238A (en) 1948-03-13 1948-03-13 Improvements in or relating to automatic frequency control circuit arrangements

Publications (1)

Publication Number Publication Date
GB670238A true GB670238A (en) 1952-04-16

Family

ID=9838066

Family Applications (1)

Application Number Title Priority Date Filing Date
GB769848A Expired GB670238A (en) 1948-03-13 1948-03-13 Improvements in or relating to automatic frequency control circuit arrangements

Country Status (1)

Country Link
GB (1) GB670238A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1154531B (en) * 1956-09-01 1963-09-19 Siemens Ag Frequency-modulated vibration generator using a reflex klystron with a current control grid
US4700146A (en) * 1986-03-06 1987-10-13 Harris Corporation Automatic tuning of cavity klystron using sampled RF output

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1154531B (en) * 1956-09-01 1963-09-19 Siemens Ag Frequency-modulated vibration generator using a reflex klystron with a current control grid
US4700146A (en) * 1986-03-06 1987-10-13 Harris Corporation Automatic tuning of cavity klystron using sampled RF output

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