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
GB6667/45A
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 LtdfiledCriticalBritish Thomson Houston Co Ltd
Publication of GB623365ApublicationCriticalpatent/GB623365A/en
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
H05B6/64—Heating using microwaves
H05B6/78—Arrangements for continuous movement of material
H05B6/788—Arrangements for continuous movement of material wherein an elongated material is moved by applying a mechanical tension to it
Landscapes
Physics & Mathematics
(AREA)
Electromagnetism
(AREA)
Constitution Of High-Frequency Heating
(AREA)
Abstract
623,365. Dielectric heating. BRITISH THOMSON-HOUSTON CO., Ltd. March 16, 1945, No. 6667. Convention date, March 17, 1944. [Class 39(iii)] Apparatus for heating thin strip or thread of dielectric material, comprises two electrodes 10, 11, having annular passages 12 with tubular projections for concentrating the electrostatic field along the axis of the thread or strip. In the example shown thread is wound from a reel 20 to a reel 21 passing through an impregnating bath 22a and electrodes 10, 11 to which a scource of high frequency voltage of approximately 2,500 volts and 40 megacycle frequency is applied. An alternative form of electrode for heating strip material may have an elongated slot in place of the annular passage, a plurality of annular passages in each electrode may also be employed.
GB6667/45A1944-03-171945-03-16Improvements in and relating to high frequency heating apparatus
ExpiredGB623365A
(en)
Method and arrangements of electrical circuits for obtaining a direct current, of intensity as a function of the derivative, with respect to time of the frequency of an alternating current, with variable voltage and frequency