GB739481A - Improvements in and relating to variable reactance devices and variable-frequency electric oscillation generators - Google Patents

Improvements in and relating to variable reactance devices and variable-frequency electric oscillation generators

Info

Publication number
GB739481A
GB739481A GB2227349A GB2227349A GB739481A GB 739481 A GB739481 A GB 739481A GB 2227349 A GB2227349 A GB 2227349A GB 2227349 A GB2227349 A GB 2227349A GB 739481 A GB739481 A GB 739481A
Authority
GB
United Kingdom
Prior art keywords
variable
movable electrode
relating
frequency electric
electric oscillation
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
GB2227349A
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.)
DAVID GILBERT BEADLE
British Broadcasting Corp
Original Assignee
DAVID GILBERT BEADLE
British Broadcasting Corp
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 DAVID GILBERT BEADLE, British Broadcasting Corp filed Critical DAVID GILBERT BEADLE
Priority to GB2227349A priority Critical patent/GB739481A/en
Publication of GB739481A publication Critical patent/GB739481A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
    • H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
    • H03B5/02—Details
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F21/00—Variable inductances or transformers of the signal type
    • H01F21/005—Inductances without magnetic core

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Particle Accelerators (AREA)

Abstract

739,481. Capacitors. BRITISH BROADCASTING CORPORATION, MAYO, C. G., and BEADLE, D. G. Aug. 28, 1950 [Aug. 26, 1949], No. 22273/49. Class 37. [Also in Group XL (c)] A variable capacitor having an exponential law comprises a conductive tube 88 containing a fixed electrode 91 and a movable electrode 93, both insulated from the tube. The movable electrode is mounted on a carriage 95 supported by balls 97, 98 on guide-rods 96. A steel ball on the movable electrode resiliently engages the groove on a lead-screw 89 such that when the carriage reaches the end of its travel the ball will lift out of the groove. Connection is made to the movable electrode by a spring 102.
GB2227349A 1949-08-26 1949-08-26 Improvements in and relating to variable reactance devices and variable-frequency electric oscillation generators Expired GB739481A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2227349A GB739481A (en) 1949-08-26 1949-08-26 Improvements in and relating to variable reactance devices and variable-frequency electric oscillation generators

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2227349A GB739481A (en) 1949-08-26 1949-08-26 Improvements in and relating to variable reactance devices and variable-frequency electric oscillation generators

Publications (1)

Publication Number Publication Date
GB739481A true GB739481A (en) 1955-11-02

Family

ID=10176701

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2227349A Expired GB739481A (en) 1949-08-26 1949-08-26 Improvements in and relating to variable reactance devices and variable-frequency electric oscillation generators

Country Status (1)

Country Link
GB (1) GB739481A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1179609B (en) * 1961-05-03 1964-10-15 Siemens Ag Amplitude stabilized alternator

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1179609B (en) * 1961-05-03 1964-10-15 Siemens Ag Amplitude stabilized alternator

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