GB684803A - Improvements in or relating to thermionic valve amplifier stages of the cathode follower type - Google Patents

Improvements in or relating to thermionic valve amplifier stages of the cathode follower type

Info

Publication number
GB684803A
GB684803A GB3058150A GB3058150A GB684803A GB 684803 A GB684803 A GB 684803A GB 3058150 A GB3058150 A GB 3058150A GB 3058150 A GB3058150 A GB 3058150A GB 684803 A GB684803 A GB 684803A
Authority
GB
United Kingdom
Prior art keywords
switched
bias
control grid
grid
cathode
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
GB3058150A
Inventor
Hugh Frederic Bartlett
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 GB3058150A priority Critical patent/GB684803A/en
Publication of GB684803A publication Critical patent/GB684803A/en
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03FAMPLIFIERS
    • H03F3/00Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/50Amplifiers in which input is applied to, or output is derived from, an impedance common to input and output circuits of the amplifying element, e.g. cathode follower
    • H03F3/52Amplifiers in which input is applied to, or output is derived from, an impedance common to input and output circuits of the amplifying element, e.g. cathode follower with tubes only

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Amplifiers (AREA)

Abstract

684,803. Valve amplifying circuits. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. Aug. 13, 1951 [Dec. 14, 1950], No. 30581/50. Class 40 (vi). In a high-power cathode-follower stage V, the control grid is prevented from being accidentally driven positive by providing (1) bias resistance means R1, R2, R3 in the cathode lead to bias the control grid negatively as soon as the bias supply is switched on, (2) high-tension and bias supply smoothing circuits of such timeconstants as to ensure the grid remains negative during the transient periods when the hightension is switched on or, after it is switched off, the grid bias supply is switched off, and (3) a diode D connected between the control grid and earth via delay bias means R6, R7, R8 together with shunt condenser Cl, which provides a conductive path if, during normal operation the control grid of the valve V is driven positive with respect to the cathode.
GB3058150A 1950-12-14 1950-12-14 Improvements in or relating to thermionic valve amplifier stages of the cathode follower type Expired GB684803A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3058150A GB684803A (en) 1950-12-14 1950-12-14 Improvements in or relating to thermionic valve amplifier stages of the cathode follower type

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3058150A GB684803A (en) 1950-12-14 1950-12-14 Improvements in or relating to thermionic valve amplifier stages of the cathode follower type

Publications (1)

Publication Number Publication Date
GB684803A true GB684803A (en) 1952-12-24

Family

ID=10309885

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3058150A Expired GB684803A (en) 1950-12-14 1950-12-14 Improvements in or relating to thermionic valve amplifier stages of the cathode follower type

Country Status (1)

Country Link
GB (1) GB684803A (en)

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