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GB484218A - Improvements in or relating to thermionic valve circuits - Google Patents

Improvements in or relating to thermionic valve circuits

Info

Publication number
GB484218A
GB484218A GB3042736A GB3042736A GB484218A GB 484218 A GB484218 A GB 484218A GB 3042736 A GB3042736 A GB 3042736A GB 3042736 A GB3042736 A GB 3042736A GB 484218 A GB484218 A GB 484218A
Authority
GB
United Kingdom
Prior art keywords
valve
circuit
output
low
higher frequencies
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
GB3042736A
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.)
EMI Ltd
Electrical and Musical Industries Ltd
Original Assignee
EMI Ltd
Electrical and Musical Industries 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 EMI Ltd, Electrical and Musical Industries Ltd filed Critical EMI Ltd
Priority to GB3042736A priority Critical patent/GB484218A/en
Publication of GB484218A publication Critical patent/GB484218A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/50—Amplifiers 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
    • H03F3/52—Amplifiers 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)
  • Magnetically Actuated Valves (AREA)

Abstract

484,218. Valve amplifying circuits. ELECTRIC & MUSICAL INDUSTRIES, Ltd., and PERCIVAL, W. S. Nov. 9, 1936, No. 30427. Addition to 448,421. [Class 40 (v)] In a valve amplifier circuit of the cathodefollower type as described in the parent Specification, the cathode of the valve is isolated from the output circuit in respect of D.C. or low frequency voltages by feeding the latter through a path to the output which byepasses the valve. Thus in the Figure, D.C. and low-frequency voltages are fed directly to the output 8 over resistance 5, while the higher frequencies are applied over condensers 4 and 6. Resistances 5 and 7 are adjusted to compensate for attenuation of the higher frequencies due to the amplification of valve 1 being less than unity. The valve 1 may be a screen-grid valve and the circuit can be usedas a low-frequency attenuating circuit; condenser 6 and upper terminal 8 are then connected to an adjustable tapping on resistance 7.
GB3042736A 1936-11-09 1936-11-09 Improvements in or relating to thermionic valve circuits Expired GB484218A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3042736A GB484218A (en) 1936-11-09 1936-11-09 Improvements in or relating to thermionic valve circuits

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3042736A GB484218A (en) 1936-11-09 1936-11-09 Improvements in or relating to thermionic valve circuits

Publications (1)

Publication Number Publication Date
GB484218A true GB484218A (en) 1938-05-03

Family

ID=10307514

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3042736A Expired GB484218A (en) 1936-11-09 1936-11-09 Improvements in or relating to thermionic valve circuits

Country Status (1)

Country Link
GB (1) GB484218A (en)

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