GB736492A - Improvements in or relating to grid modulated radio transmitters - Google Patents

Improvements in or relating to grid modulated radio transmitters

Info

Publication number
GB736492A
GB736492A GB1527851A GB1527851A GB736492A GB 736492 A GB736492 A GB 736492A GB 1527851 A GB1527851 A GB 1527851A GB 1527851 A GB1527851 A GB 1527851A GB 736492 A GB736492 A GB 736492A
Authority
GB
United Kingdom
Prior art keywords
grid
voltage
stage
control
valve
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
GB1527851A
Inventor
Victor James Cooper
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.)
Marconis Wireless Telegraph Co Ltd
BAE Systems Electronics Ltd
Original Assignee
Marconis Wireless Telegraph Co Ltd
Marconi Co 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 Marconis Wireless Telegraph Co Ltd, Marconi Co Ltd filed Critical Marconis Wireless Telegraph Co Ltd
Priority to GB1527851A priority Critical patent/GB736492A/en
Publication of GB736492A publication Critical patent/GB736492A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C1/00—Amplitude modulation
    • H03C1/02—Details
    • H03C1/06—Modifications of modulator to reduce distortion, e.g. by feedback, and clearly applicable to more than one type of modulator

Landscapes

  • Control Of Amplification And Gain Control (AREA)
  • Circuits Of Receivers In General (AREA)

Abstract

736,492. Automatic voltage control systems. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. Feb. 11, 1952 [June 27, 1951], No. 15278/51. Addition to 695,416. Class 38 (4). [Also in Group XL (c)] The drive applied to a variable impedance load from a radio frequency source is maintained constant by rectification to produce a control voltage which is utilized to vary the drive in such a manner as to oppose change in output level. In a transmitter comprising a grid modulated stage 13 driven with R.F. via cascaded stages 3, 7, the stage 7 being a cathode-follower and 5, 10, 14 representing tuned circuits, the voltage across the tuned circuit 10 is rectified by a rectifier 15. The rectified voltage, after optional amplification in an amplifier 16 is applied to the grid of a control valve 18 which, together with a resistance 6 forms a potentiometer supplying H.T. to the amplifier 3. In this way the gain of the stage 3 is varied in such a manner as to maintain the R.F. potential across the circuit 10 constant. Control may alternatively be applied to the grid or cathode of the valve 3, or if this comprises a screen-grid valve, to the screen.
GB1527851A 1951-06-27 1951-06-27 Improvements in or relating to grid modulated radio transmitters Expired GB736492A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1527851A GB736492A (en) 1951-06-27 1951-06-27 Improvements in or relating to grid modulated radio transmitters

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1527851A GB736492A (en) 1951-06-27 1951-06-27 Improvements in or relating to grid modulated radio transmitters

Publications (1)

Publication Number Publication Date
GB736492A true GB736492A (en) 1955-09-07

Family

ID=10056218

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1527851A Expired GB736492A (en) 1951-06-27 1951-06-27 Improvements in or relating to grid modulated radio transmitters

Country Status (1)

Country Link
GB (1) GB736492A (en)

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