GB906407A - Improvements in or relating to electric filter networks - Google Patents

Improvements in or relating to electric filter networks

Info

Publication number
GB906407A
GB906407A GB3567758A GB3567758A GB906407A GB 906407 A GB906407 A GB 906407A GB 3567758 A GB3567758 A GB 3567758A GB 3567758 A GB3567758 A GB 3567758A GB 906407 A GB906407 A GB 906407A
Authority
GB
United Kingdom
Prior art keywords
winding
inductance
filter
nov
transmitter
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
GB3567758A
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.)
DAVID ALLEN SCOTT DRYBROUGH
General Electric Co PLC
Original Assignee
DAVID ALLEN SCOTT DRYBROUGH
General Electric Co 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 DAVID ALLEN SCOTT DRYBROUGH, General Electric Co PLC filed Critical DAVID ALLEN SCOTT DRYBROUGH
Priority to GB3567758A priority Critical patent/GB906407A/en
Publication of GB906407A publication Critical patent/GB906407A/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
    • H03F3/26—Push-pull amplifiers; Phase-splitters therefor
    • H03F3/28—Push-pull amplifiers; Phase-splitters therefor with tubes only
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C1/00—Amplitude modulation
    • H03C1/08—Amplitude modulation by means of variable impedance element

Landscapes

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

Abstract

906,407. Filter networks. GENERAL ELECTRIC CO. Ltd., and DRYBROUGH, D. A. S. Nov. 6, 1959 [Nov. 6, 1958], No. 35677/58. Class 40 (8). A filter network whose input is derived from between two points on a first inductance, includes a second inductance coupled to the first inductance in such a manner that the voltage induced by the coupling is 180 degrees out of phase with the voltage which would otherwise appear across the second inductance. The circuit shown is a push-pull audio amplifier for an A.M. transmitter, the anodes of valves 2 and 1 being respectively connected to one end of the primary winding 9 of an output transformer and to a tapping-point on the winding. The other end of the winding 9 is connected to an inductor 11 constituted by a winding on the same core as winding 9. This is combined with capacitors 12, 13 to form a low-pass filter network. The anode power supply for the power amplification stages is fed from a constant voltage source 10 through winding 11 to the output terminal of the filter. The current supplied to the power amplifier thus varies with the filtered signal frequency so that the output of the transmitter is amplitude-modulated.
GB3567758A 1958-11-06 1958-11-06 Improvements in or relating to electric filter networks Expired GB906407A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3567758A GB906407A (en) 1958-11-06 1958-11-06 Improvements in or relating to electric filter networks

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3567758A GB906407A (en) 1958-11-06 1958-11-06 Improvements in or relating to electric filter networks

Publications (1)

Publication Number Publication Date
GB906407A true GB906407A (en) 1962-09-19

Family

ID=10380354

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3567758A Expired GB906407A (en) 1958-11-06 1958-11-06 Improvements in or relating to electric filter networks

Country Status (1)

Country Link
GB (1) GB906407A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022153054A1 (en) * 2021-01-15 2022-07-21 Marshall Amplification Plc Reactive attenuator

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022153054A1 (en) * 2021-01-15 2022-07-21 Marshall Amplification Plc Reactive attenuator
GB2603116A (en) * 2021-01-15 2022-08-03 Marshall Amplification Plc Reactive Attenuator
GB2603116B (en) * 2021-01-15 2023-06-21 Marshall Amplification Plc Reactive Attenuator

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