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GB939724A - Improvements in or relating to radio frequency dielectric heating apparatus - Google Patents

Improvements in or relating to radio frequency dielectric heating apparatus

Info

Publication number
GB939724A
GB939724A GB3915859A GB3915859A GB939724A GB 939724 A GB939724 A GB 939724A GB 3915859 A GB3915859 A GB 3915859A GB 3915859 A GB3915859 A GB 3915859A GB 939724 A GB939724 A GB 939724A
Authority
GB
United Kingdom
Prior art keywords
radio frequency
motor
heating apparatus
relay
windings
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
GB3915859A
Inventor
John Jeken Glover
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.)
Radyne Ltd
Original Assignee
Radyne 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 Radyne Ltd filed Critical Radyne Ltd
Priority to GB3915859A priority Critical patent/GB939724A/en
Publication of GB939724A publication Critical patent/GB939724A/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
    • H05B6/46—Dielectric heating
    • H05B6/48—Circuits
    • H05B6/50—Circuits for monitoring or control

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Air-Conditioning For Vehicles (AREA)

Abstract

939,724. Automatic current control systems for radio frequency heating apparatus. RADYNE Ltd. Dec. 1, 1960 [Nov. 18, 1959], No. 39158/59. Class 38 (4). Radio frequency heating apparatus comprises a radio frequency generator of the electronic valve oscillator type the H.T. current supply to which is supplied by way of a resistor 2, the voltage across this resistor energizing a winding 6 of a centre-balance relay A/1 a further winding 7 of which is energized by a standard voltage obtained from a potentiometer 5. When the H.T. current varies outside a predetermined range the windings 6, 7 of the relay A/1 are unbalanced causing the centre contact 9 to move to engage either contact 8 or 10 whereupon a relay system operates to cause one or other of the windings of a motor 11 to be energized so that the motor drives the upper electrode of the heater either towards or away from the burner electrode so that the output of the radio frequency generator is maintained within the predetermined range. The motor 11 is provided with an electromagnetic brake 12. The electrodes are provided with upper and lower limit switches 51, 52 and the control circuit may be described by means of switches S3, S4 and the motor 11 may be controlled manually by means of push buttons 15, 16 and 17, 18.
GB3915859A 1959-11-18 1959-11-18 Improvements in or relating to radio frequency dielectric heating apparatus Expired GB939724A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3915859A GB939724A (en) 1959-11-18 1959-11-18 Improvements in or relating to radio frequency dielectric heating apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3915859A GB939724A (en) 1959-11-18 1959-11-18 Improvements in or relating to radio frequency dielectric heating apparatus

Publications (1)

Publication Number Publication Date
GB939724A true GB939724A (en) 1963-10-16

Family

ID=10407986

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3915859A Expired GB939724A (en) 1959-11-18 1959-11-18 Improvements in or relating to radio frequency dielectric heating apparatus

Country Status (1)

Country Link
GB (1) GB939724A (en)

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