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GB475420A - Improvements in band-pass electrical wave filters - Google Patents

Improvements in band-pass electrical wave filters

Info

Publication number
GB475420A
GB475420A GB1405536A GB1405536A GB475420A GB 475420 A GB475420 A GB 475420A GB 1405536 A GB1405536 A GB 1405536A GB 1405536 A GB1405536 A GB 1405536A GB 475420 A GB475420 A GB 475420A
Authority
GB
United Kingdom
Prior art keywords
band
pair
plates
wave filters
tuned 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
GB1405536A
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.)
Mullard Radio Valve Co Ltd
Original Assignee
Mullard Radio Valve Co Ltd
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 Mullard Radio Valve Co Ltd filed Critical Mullard Radio Valve Co Ltd
Priority to GB1405536A priority Critical patent/GB475420A/en
Publication of GB475420A publication Critical patent/GB475420A/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

Landscapes

  • Electrically Driven Valve-Operating Means (AREA)

Abstract

475,420. Impedance networks. MULLARD RADIO VALVE CO., Ltd., and CLARK, R. G. May 18, 1936, No. 14055. [Class 40 (iii)] A band-pass filter whose band-width can be varied without disturbance of the mean pass frequency comprises a pair of tuned circuits L1C1, L2C2, coupled by a variable condenser. having a pair of plates P1, P2, which are connected respectively to the tuned circuits and a relatively movable pair P3, P4, of which P4 is thick and insulated while P3 is thin and earthed. P3, P4 form a stator while P1, P2, form a rotor, or vice versa, and the plates may all be semicircular. The coils L1, L2, may have mutual inductances which has the minimum negative value that permits of critical coupling. Specification 460,186 is referred to. Reference has been directed by the Comptroller to Specification 455,619.
GB1405536A 1936-05-18 1936-05-18 Improvements in band-pass electrical wave filters Expired GB475420A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1405536A GB475420A (en) 1936-05-18 1936-05-18 Improvements in band-pass electrical wave filters

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1405536A GB475420A (en) 1936-05-18 1936-05-18 Improvements in band-pass electrical wave filters

Publications (1)

Publication Number Publication Date
GB475420A true GB475420A (en) 1937-11-18

Family

ID=10034160

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1405536A Expired GB475420A (en) 1936-05-18 1936-05-18 Improvements in band-pass electrical wave filters

Country Status (1)

Country Link
GB (1) GB475420A (en)

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