GB542930A - Valve circuits with electronic discharge - Google Patents

Valve circuits with electronic discharge

Info

Publication number
GB542930A
GB542930A GB12343/40A GB1234340A GB542930A GB 542930 A GB542930 A GB 542930A GB 12343/40 A GB12343/40 A GB 12343/40A GB 1234340 A GB1234340 A GB 1234340A GB 542930 A GB542930 A GB 542930A
Authority
GB
United Kingdom
Prior art keywords
impedance
coupling
class
series
response
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
GB12343/40A
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.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
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 Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Publication of GB542930A publication Critical patent/GB542930A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C1/00—Amplitude modulation
    • H03C1/16—Amplitude modulation by means of discharge device having at least three electrodes
    • H03C1/18—Amplitude modulation by means of discharge device having at least three electrodes carrier applied to control grid
    • H03C1/26—Amplitude modulation by means of discharge device having at least three electrodes carrier applied to control grid modulating signal applied to cathode
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/02—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation
    • H03F1/04—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in discharge-tube amplifiers
    • H03F1/06—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in discharge-tube amplifiers to raise the efficiency of amplifying modulated radio frequency waves; to raise the efficiency of amplifiers acting also as modulators
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/26—Push-pull amplifiers; Phase-splitters therefor
    • H03F3/28—Push-pull amplifiers; Phase-splitters therefor with tubes only
    • 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

Abstract

542,930. Valve amplifying circuits. STANDARD TELEPHONES & CABLES, Ltd. July 30, 1940, No. 12343. Convention date, Aug. 2, 1939. [Class 40 (v)] In an amplifier the exciting voltage is applied to the cathode from an impedance in the cathode lead of the preceding stage. Fig. 1 shows a high frequency amplifier in which the tuned circuit 4, 5 forms the coupling impedance and inductances 8, 9 neutralise the inherent capacities of the two stages. The arrangement is also applicable to wideband amplifiers by using resistance coupling. An inductance in series with the plate load resistance may be provided to maintain the response at high frequencies and an impedance may be arranged in series with the grid of the output stage to modify the response. Fig. 3 shows a push-pull audio amplifier operating in Class B using chokes 31, 32 for coupling. The valves may be double triodes in a common envelope.
GB12343/40A 1939-08-02 1940-07-30 Valve circuits with electronic discharge Expired GB542930A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR861809T 1939-08-02

Publications (1)

Publication Number Publication Date
GB542930A true GB542930A (en) 1942-02-03

Family

ID=9342246

Family Applications (1)

Application Number Title Priority Date Filing Date
GB12343/40A Expired GB542930A (en) 1939-08-02 1940-07-30 Valve circuits with electronic discharge

Country Status (3)

Country Link
CH (1) CH269955A (en)
FR (1) FR861809A (en)
GB (1) GB542930A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2668240A (en) * 1943-11-24 1954-02-02 Jr George A Brettell Noninverting oscillator
FR959970A (en) * 1946-10-18 1950-04-07

Also Published As

Publication number Publication date
CH269955A (en) 1950-07-31
FR861809A (en) 1941-02-18

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