GB337830A - Electrical amplifier circuits - Google Patents

Electrical amplifier circuits

Info

Publication number
GB337830A
GB337830A GB24442/29A GB2444229A GB337830A GB 337830 A GB337830 A GB 337830A GB 24442/29 A GB24442/29 A GB 24442/29A GB 2444229 A GB2444229 A GB 2444229A GB 337830 A GB337830 A GB 337830A
Authority
GB
United Kingdom
Prior art keywords
grid
impedance
frequency
resistor
circuits
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
GB24442/29A
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.)
RADIO FREQUENCY LAB Inc
Original Assignee
RADIO FREQUENCY LAB Inc
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 RADIO FREQUENCY LAB Inc filed Critical RADIO FREQUENCY LAB Inc
Publication of GB337830A publication Critical patent/GB337830A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H03F1/34—Negative-feedback-circuit arrangements with or without positive feedback
    • H03F1/36—Negative-feedback-circuit arrangements with or without positive feedback in discharge-tube amplifiers

Landscapes

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

Abstract

337,830. Radio Frequency Laboratories, Inc. June 8, 1929, [Convention date]. Thermionic amplifiers. -A thermionic amplifier adapted to be tuned over a band of frequencies includes a series impedance common to both grid and plate circuits, the impedance being resonant at the lower limit of the frequency band. The composite impedance, constituted by inductance L5 and condenser C5, Fig. 2, is connected between the cathode and the junction of the grid and plate circuits and is shown in parallel with a grid biasing resistor &c. The arrangement constitutes a reaction coupling between the plate and grid circuits, the effective signal voltage between grid and cathode being reduced at higher frequencies since the radio frequency potential drop across L5, C5, increases with the frequency. In a modification, Fig. 3, not shown, the inductances L5 is in series and condenser C5 in parallel with the resistor RC; the total impedance is however effectively in shunt across the resistor. Specification 294,200 is referred to. The Specification as open to inspection under Sect. 91 (3) (a) states that the invention may also be applied to audio-frequency amplifiers, and the impedance may be chosen to effect a cut-off at or near a disturbing frequency. This subjectmatter does not appear in the Specification as accepted.
GB24442/29A 1929-06-08 1929-08-09 Electrical amplifier circuits Expired GB337830A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US337830XA 1929-06-08 1929-06-08

Publications (1)

Publication Number Publication Date
GB337830A true GB337830A (en) 1930-11-10

Family

ID=21872411

Family Applications (1)

Application Number Title Priority Date Filing Date
GB24442/29A Expired GB337830A (en) 1929-06-08 1929-08-09 Electrical amplifier circuits

Country Status (1)

Country Link
GB (1) GB337830A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE743591C (en) * 1938-11-16 1943-11-04 Philips Patentverwaltung Low frequency amplifier with a negative feedback that favors the reproduction of the low frequencies
DE859035C (en) * 1935-08-28 1952-12-11 Gen Electric Co Ltd Amplifier circuit with negative feedback
DE763749C (en) * 1937-05-11 1953-05-04 Hazeltine Corp Broadband amplifier
DE756556C (en) * 1938-08-28 1954-06-08 Lorenz C Ag Tube amplifier stage for selective voltage amplification
DE1286152B (en) * 1964-11-07 1969-01-02 Telefunken Patent Transistor RF pre-stage or mixer stage with gain control and with alternating current negative feedback through an emitter resistor

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE859035C (en) * 1935-08-28 1952-12-11 Gen Electric Co Ltd Amplifier circuit with negative feedback
DE763749C (en) * 1937-05-11 1953-05-04 Hazeltine Corp Broadband amplifier
DE756556C (en) * 1938-08-28 1954-06-08 Lorenz C Ag Tube amplifier stage for selective voltage amplification
DE743591C (en) * 1938-11-16 1943-11-04 Philips Patentverwaltung Low frequency amplifier with a negative feedback that favors the reproduction of the low frequencies
DE1286152B (en) * 1964-11-07 1969-01-02 Telefunken Patent Transistor RF pre-stage or mixer stage with gain control and with alternating current negative feedback through an emitter resistor

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