GB601531A - Improvements in circuits of variable frequency-selectivity - Google Patents

Improvements in circuits of variable frequency-selectivity

Info

Publication number
GB601531A
GB601531A GB2050545A GB2050545A GB601531A GB 601531 A GB601531 A GB 601531A GB 2050545 A GB2050545 A GB 2050545A GB 2050545 A GB2050545 A GB 2050545A GB 601531 A GB601531 A GB 601531A
Authority
GB
United Kingdom
Prior art keywords
band
circuits
selectivity
variable frequency
gramophones
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
GB2050545A
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.)
E M G HANDMADE GRAMOPHONES Ltd
Original Assignee
E M G HANDMADE GRAMOPHONES Ltd
Filing date
Publication date
Application filed by E M G HANDMADE GRAMOPHONES Ltd filed Critical E M G HANDMADE GRAMOPHONES Ltd
Publication of GB601531A publication Critical patent/GB601531A/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
    • 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
    • H03H7/17—Structural details of sub-circuits of frequency selective networks
    • H03H7/1741—Comprising typical LC combinations, irrespective of presence and location of additional resistors
    • H03H7/1775—Parallel LC in shunt or branch path
    • 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

Abstract

601,531. Band-pass filters. E.M.G. HANDMADE GRAMOPHONES, Ltd., and DAVEY, F. G. G. Aug. 9, 1945, No. 20505. [Class 40 (viii)] A band-pass filter of variable band-width consists of two series resonant circuits L1, C1, L2, C2 coupled by means of the parallel tuned circuit L3, C3, the degree of coupling being varied by the tapping T on the coil L3. The input may be across C1 or induced into L1 and the outputs taken off similarly from C2 or L2.
GB2050545A 1945-08-09 Improvements in circuits of variable frequency-selectivity Expired GB601531A (en)

Publications (1)

Publication Number Publication Date
GB601531A true GB601531A (en) 1948-05-07

Family

ID=1735492

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2050545A Expired GB601531A (en) 1945-08-09 Improvements in circuits of variable frequency-selectivity

Country Status (1)

Country Link
GB (1) GB601531A (en)

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