GB577462A - Improvements in electric multistage amplifiers - Google Patents

Improvements in electric multistage amplifiers

Info

Publication number
GB577462A
GB577462A GB809943A GB809943A GB577462A GB 577462 A GB577462 A GB 577462A GB 809943 A GB809943 A GB 809943A GB 809943 A GB809943 A GB 809943A GB 577462 A GB577462 A GB 577462A
Authority
GB
United Kingdom
Prior art keywords
frequencies
frequency
tappings
inductance
band
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
GB809943A
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.)
General Electric Co PLC
Original Assignee
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 General Electric Co PLC filed Critical General Electric Co PLC
Priority to GB809943A priority Critical patent/GB577462A/en
Publication of GB577462A publication Critical patent/GB577462A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
    • H03H7/01—Frequency selective two-port networks
    • H03H7/0153—Electrical filters; Controlling thereof
    • H03H7/0161—Bandpass filters
    • H03H7/0169—Intermediate frequency filters

Abstract

577,462. Impedance networks; valve amplifying circuits. GENERAL ELECTRIC CO., Ltd., and ESPLEY, D. C. May 21, 1943, No. 8099. [Classes 40 (iii) and 40 (v)] An electric multistage valve amplifier is given a band-pass characteristic with a wide frequency range by providing a coupling consisting of a pair. of parallel tuned circuits resonant to different frequencies and a resistor, preferably variable, connecting a point on the inductance of one tuned circuit to a point of the inductance of the other tuned circuit. The Figure shows an arrangement suitable for an intermediate frequency amplifier in which the tappings T1, T2 of the resistance R to the inductances L1, L2 is not to the high potential ends of these coils. By suitable adjustment of the tappings variation in the ratio of the capacity C1, C2 to the frequencies may be compensated. The Specification gives a mathematical analysis of the circuit showing that the frequency transferimpedance at any particular frequency within the band may be made equal to that at frequencies near the ends of the range. High impedance valves such as pentodes or screen grid valves are preferably employed.
GB809943A 1943-05-21 1943-05-21 Improvements in electric multistage amplifiers Expired GB577462A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB809943A GB577462A (en) 1943-05-21 1943-05-21 Improvements in electric multistage amplifiers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB809943A GB577462A (en) 1943-05-21 1943-05-21 Improvements in electric multistage amplifiers

Publications (1)

Publication Number Publication Date
GB577462A true GB577462A (en) 1946-05-20

Family

ID=9845741

Family Applications (1)

Application Number Title Priority Date Filing Date
GB809943A Expired GB577462A (en) 1943-05-21 1943-05-21 Improvements in electric multistage amplifiers

Country Status (1)

Country Link
GB (1) GB577462A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4297643A (en) * 1979-11-13 1981-10-27 Pearson Jr Thomas J Noise obviating electronic signal coupling means

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4297643A (en) * 1979-11-13 1981-10-27 Pearson Jr Thomas J Noise obviating electronic signal coupling means

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