GB390926A - Improvements in electrical coupling arrangements for thermionic valve amplifiers - Google Patents

Improvements in electrical coupling arrangements for thermionic valve amplifiers

Info

Publication number
GB390926A
GB390926A GB463932A GB463932A GB390926A GB 390926 A GB390926 A GB 390926A GB 463932 A GB463932 A GB 463932A GB 463932 A GB463932 A GB 463932A GB 390926 A GB390926 A GB 390926A
Authority
GB
United Kingdom
Prior art keywords
circuit
valve
tuning
volume control
electrical coupling
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
GB463932A
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.)
CARL FICHLANDER
Original Assignee
CARL FICHLANDER
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 CARL FICHLANDER filed Critical CARL FICHLANDER
Priority to GB463932A priority Critical patent/GB390926A/en
Publication of GB390926A publication Critical patent/GB390926A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J3/00—Continuous tuning
    • H03J3/02—Details
    • H03J3/06—Arrangements for obtaining constant bandwidth or gain throughout tuning range or ranges
    • H03J3/08—Arrangements for obtaining constant bandwidth or gain throughout tuning range or ranges by varying a second parameter simultaneously with the tuning, e.g. coupling bandpass filter

Landscapes

  • Amplifiers (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)

Abstract

390,926. Valve circuits for wireless reception. POLLAK, J. E., 20, Holborn, London.-(Fichlander, C. ; 160, West 95th Street, New York, U.S.A.) Feb. 16, 1932, No. 4639. [Class 40 (v).] In a radio-frequency amplifier in which volume control is effected by varying the coupling between the output of valve P and the tuned input circuit L, S of valve Q, variations in the tuning of circuit L, S due to alterations of coupling are compensated for by a circuit R simulating the output circuit of valve P, and variations in the inductance m due to alterations in the tuning of the circuit L, S are compensated for by mechanically linking the tuning condenser S to the volume control. The coils m, L, n are arranged in staggered relation, the volume control moving the coil L in a direction at right-angles to the flux therethrough, while the tuning control moves the coil L in the direction of the flux. Specification 364,580 is referred to.
GB463932A 1932-02-16 1932-02-16 Improvements in electrical coupling arrangements for thermionic valve amplifiers Expired GB390926A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB463932A GB390926A (en) 1932-02-16 1932-02-16 Improvements in electrical coupling arrangements for thermionic valve amplifiers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB463932A GB390926A (en) 1932-02-16 1932-02-16 Improvements in electrical coupling arrangements for thermionic valve amplifiers

Publications (1)

Publication Number Publication Date
GB390926A true GB390926A (en) 1933-04-20

Family

ID=9780970

Family Applications (1)

Application Number Title Priority Date Filing Date
GB463932A Expired GB390926A (en) 1932-02-16 1932-02-16 Improvements in electrical coupling arrangements for thermionic valve amplifiers

Country Status (1)

Country Link
GB (1) GB390926A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2306572A1 (en) * 1975-04-04 1976-10-29 Philips Nv TUNABLE BAND FILTER WITH ADJUSTABLE FREQUENCY ATTENUATION DEGREE

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2306572A1 (en) * 1975-04-04 1976-10-29 Philips Nv TUNABLE BAND FILTER WITH ADJUSTABLE FREQUENCY ATTENUATION DEGREE

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