GB609038A - Improvements in and relating to high frequency generators - Google Patents

Improvements in and relating to high frequency generators

Info

Publication number
GB609038A
GB609038A GB33033/46A GB3303345A GB609038A GB 609038 A GB609038 A GB 609038A GB 33033/46 A GB33033/46 A GB 33033/46A GB 3303345 A GB3303345 A GB 3303345A GB 609038 A GB609038 A GB 609038A
Authority
GB
United Kingdom
Prior art keywords
grid
generator
resistance
choke
dec
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
GB33033/46A
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 GB609038A publication Critical patent/GB609038A/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)
  • General Induction Heating (AREA)

Abstract

609,038. Valve generating circuits. BRITISH THOMSON-HOUSTON CO., Ltd. Dec. 6, 1945, No. 33033. Convention date, Dec. 9, 1944. [Class 40 (vi)] In a high-frequency generator, a grid-leak resistance having a high positive temperature coefficient of resistance is provided and arranged to have such current carrying characteristics as to be heated by the increased negative bias voltage produced when the load on the generator is reduced. In this way the increase in the resistance increases the grid bias and so limits the grid current. The Figure shows a generator 3, the tank circuit of which is tuned by the coil 11 and earthed through the choke 19 and includes the work coil 1 of an induction heater and may operate at. 500 kc. The grid-leak circuit is made up of the choke 18 and tungsten filament lamps.
GB33033/46A 1944-12-09 1945-12-06 Improvements in and relating to high frequency generators Expired GB609038A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US609038XA 1944-12-09 1944-12-09

Publications (1)

Publication Number Publication Date
GB609038A true GB609038A (en) 1948-09-24

Family

ID=22032460

Family Applications (1)

Application Number Title Priority Date Filing Date
GB33033/46A Expired GB609038A (en) 1944-12-09 1945-12-06 Improvements in and relating to high frequency generators

Country Status (1)

Country Link
GB (1) GB609038A (en)

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