GB668271A - Improvements in electronic high-frequency generators suitable for industrial heating - Google Patents

Improvements in electronic high-frequency generators suitable for industrial heating

Info

Publication number
GB668271A
GB668271A GB32174/47A GB3217447A GB668271A GB 668271 A GB668271 A GB 668271A GB 32174/47 A GB32174/47 A GB 32174/47A GB 3217447 A GB3217447 A GB 3217447A GB 668271 A GB668271 A GB 668271A
Authority
GB
United Kingdom
Prior art keywords
grids
phase
anodes
circuit
anode
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
GB32174/47A
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.)
British Thomson Houston Co Ltd
Original Assignee
British Thomson Houston 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 British Thomson Houston Co Ltd filed Critical British Thomson Houston Co Ltd
Publication of GB668271A publication Critical patent/GB668271A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/02—Induction heating
    • H05B6/04—Sources of current

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Particle Accelerators (AREA)

Abstract

668,271. Valve generating circuits. BRITISH THOMSON-HOUSTON CO., Ltd. Dec. 5, 1947 [March 4, 1946], No. 32174/47. Class 40 (vi). A high-frequency generator energized from a 3 or more phase supply has one valve per phase the grids of which are excited by separate inductors wound on a common support and has an A.C. supply fed to the grids in the same phase as to the anodes to prevent grid current when the corresponding anode is negative. The Specification describes a circuit comprising only two valves 3, 3<SP>1</SP> having a common anode tuned circuit 5 coupled to separate grid coils 6, 6<SP>1</SP> to produce oscillation and have their anodes energized through H.F. chokes 2, 2<SP>1</SP> in phase opposition by the mains transformer 1. A further transformer 11 feeds a mains voltage to the grids in the same phase as to the anodes. Specifications 18.4,216 and 619,228 are referred to. The Specification as open to inspection under Sect. 91 describes a circuit in which a single coil coupled to the anode tuned circuit feeds the two grids. This subject-matter does not appear in the Specification as accepted.
GB32174/47A 1946-03-04 1947-12-05 Improvements in electronic high-frequency generators suitable for industrial heating Expired GB668271A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR668271X 1946-03-04

Publications (1)

Publication Number Publication Date
GB668271A true GB668271A (en) 1952-03-12

Family

ID=9014913

Family Applications (1)

Application Number Title Priority Date Filing Date
GB32174/47A Expired GB668271A (en) 1946-03-04 1947-12-05 Improvements in electronic high-frequency generators suitable for industrial heating

Country Status (1)

Country Link
GB (1) GB668271A (en)

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