GB845404A - Improvements in or relating to variable electric condensers - Google Patents

Improvements in or relating to variable electric condensers

Info

Publication number
GB845404A
GB845404A GB3423255A GB3423255A GB845404A GB 845404 A GB845404 A GB 845404A GB 3423255 A GB3423255 A GB 3423255A GB 3423255 A GB3423255 A GB 3423255A GB 845404 A GB845404 A GB 845404A
Authority
GB
United Kingdom
Prior art keywords
electrode
nov
relating
variable
planar electrode
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
GB3423255A
Inventor
Alan Herbert Pratt
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.)
EMI Ltd
Electrical and Musical Industries Ltd
Original Assignee
EMI Ltd
Electrical and Musical Industries 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 EMI Ltd, Electrical and Musical Industries Ltd filed Critical EMI Ltd
Priority to GB3423255A priority Critical patent/GB845404A/en
Publication of GB845404A publication Critical patent/GB845404A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G5/00—Capacitors in which the capacitance is varied by mechanical means, e.g. by turning a shaft; Processes of their manufacture
    • H01G5/04—Capacitors in which the capacitance is varied by mechanical means, e.g. by turning a shaft; Processes of their manufacture using variation of effective area of electrode
    • H01G5/06—Capacitors in which the capacitance is varied by mechanical means, e.g. by turning a shaft; Processes of their manufacture using variation of effective area of electrode due to rotation of flat or substantially flat electrodes

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)

Abstract

845,404. Variable capacitors. ELECTRIC & MUSICAL INDUSTRIES Ltd. Nov. 6, 1956 [Nov. 30, 1955], No. 34232/55. Class 37. A variable capacitor comprises an insulating support 3; a planar electrode 1, 2 formed thereon by printed circuit technique; and a movable electrode 6 mounted for movement relative to the planar electrode to vary the capacity. The fixed planar electrode comprises two spaced aparts, electrically connected portions 1, 2. The movable electrode 6 is of aluminium with an oxide coating on the surface adjacent the fixed electrode to act as a dielectric, and is pivoted at its centre to the supporting plate 3. A variable capacitance from 1 to 5 pF is obtainable.
GB3423255A 1955-11-30 1955-11-30 Improvements in or relating to variable electric condensers Expired GB845404A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3423255A GB845404A (en) 1955-11-30 1955-11-30 Improvements in or relating to variable electric condensers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3423255A GB845404A (en) 1955-11-30 1955-11-30 Improvements in or relating to variable electric condensers

Publications (1)

Publication Number Publication Date
GB845404A true GB845404A (en) 1960-08-24

Family

ID=10363070

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3423255A Expired GB845404A (en) 1955-11-30 1955-11-30 Improvements in or relating to variable electric condensers

Country Status (1)

Country Link
GB (1) GB845404A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3205417A (en) * 1960-11-07 1965-09-07 Maeda Hisao Multiple ceramic variable disk capacitor
US4198670A (en) * 1978-11-20 1980-04-15 General Motors Corporation Capacitive pressure transducer
GB2180993A (en) * 1985-09-26 1987-04-08 Alps Electric Co Ltd Semi-fixed ceramic capacitors
US9905896B2 (en) 2015-01-23 2018-02-27 Spinner Gmbh Rotary switch for low passive intermodulation connection

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3205417A (en) * 1960-11-07 1965-09-07 Maeda Hisao Multiple ceramic variable disk capacitor
US4198670A (en) * 1978-11-20 1980-04-15 General Motors Corporation Capacitive pressure transducer
GB2180993A (en) * 1985-09-26 1987-04-08 Alps Electric Co Ltd Semi-fixed ceramic capacitors
US9905896B2 (en) 2015-01-23 2018-02-27 Spinner Gmbh Rotary switch for low passive intermodulation connection
EP3048664B1 (en) * 2015-01-23 2018-08-01 Spinner GmbH Coaxial rotary switch with capacitive coupling contacts for low passive intermodulation connection

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