GB202115A - Improvements in or relating to electrical apparatus for use in high frequency circuits - Google Patents

Improvements in or relating to electrical apparatus for use in high frequency circuits

Info

Publication number
GB202115A
GB202115A GB1700922A GB1700922A GB202115A GB 202115 A GB202115 A GB 202115A GB 1700922 A GB1700922 A GB 1700922A GB 1700922 A GB1700922 A GB 1700922A GB 202115 A GB202115 A GB 202115A
Authority
GB
United Kingdom
Prior art keywords
inductance
condenser
shading member
carrier
conducting
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
GB1700922A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB1700922A priority Critical patent/GB202115A/en
Publication of GB202115A publication Critical patent/GB202115A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H5/00—One-port networks comprising only passive electrical elements as network components
    • H03H5/02—One-port networks comprising only passive electrical elements as network components without voltage- or current-dependent elements

Landscapes

  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)

Abstract

202,115. MacCallum, A. H. S. June 20, 1922. Condensers.-Electrical apparatus for use with wireless and other high-frequency circuits comprises an inductance, a conducting shading member movable relatively to the inductance, and a second conducting-member forming with the shading member a condenser. The inductance and the condenser may be connected in parallel, and may be varied simultaneously in the same direction for tuning purposes by moving the shading member. In one arrangement, Fig. 1, the inductance 3 and the fixed member 5 of the condenser are mounted in recesses on the underside of a sheet 1 of insulating-material, and the shading member 9 is secured to a spindle 8 provided with an operating-knob 10. In a modification, Fig. 3, the inductance 12, in the form of a solenoid, and the fixed member of the condenser, in the form of a metal tube 14, are mounted on a cylindrical insulating-carrier 13. The shading member 15 is in cylindrical or part cylindrical form, and may be placed outside the carrier, as shown, or inside the carrier. In another arrangement, the shading member is movable at right-angles to its own plane towards and away from the inductance and the fixed conducting-member.
GB1700922A 1922-06-20 1922-06-20 Improvements in or relating to electrical apparatus for use in high frequency circuits Expired GB202115A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1700922A GB202115A (en) 1922-06-20 1922-06-20 Improvements in or relating to electrical apparatus for use in high frequency circuits

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1700922A GB202115A (en) 1922-06-20 1922-06-20 Improvements in or relating to electrical apparatus for use in high frequency circuits

Publications (1)

Publication Number Publication Date
GB202115A true GB202115A (en) 1923-08-16

Family

ID=10087575

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1700922A Expired GB202115A (en) 1922-06-20 1922-06-20 Improvements in or relating to electrical apparatus for use in high frequency circuits

Country Status (1)

Country Link
GB (1) GB202115A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2468126A (en) * 1945-07-11 1949-04-26 Standard Telephones Cables Ltd Frequency scanning arrangement
US2490836A (en) * 1944-10-10 1949-12-13 Robert G Schriefer Tuning means
US2521963A (en) * 1945-08-27 1950-09-12 Robert M Beusman Inductance capacity tuner and circuit therefor
DE921390C (en) * 1942-12-20 1954-12-16 Patelhold Patentverwertung High frequency coil with changeable inductance
FR2137711A1 (en) * 1971-05-15 1972-12-29 Philips Nv

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE921390C (en) * 1942-12-20 1954-12-16 Patelhold Patentverwertung High frequency coil with changeable inductance
US2490836A (en) * 1944-10-10 1949-12-13 Robert G Schriefer Tuning means
US2468126A (en) * 1945-07-11 1949-04-26 Standard Telephones Cables Ltd Frequency scanning arrangement
US2521963A (en) * 1945-08-27 1950-09-12 Robert M Beusman Inductance capacity tuner and circuit therefor
FR2137711A1 (en) * 1971-05-15 1972-12-29 Philips Nv

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