Electric heating – Metal heating – Of cylinders
Patent
1986-01-21
1989-12-05
Leung, Philip H.
Electric heating
Metal heating
Of cylinders
219 10491, 363 98, 363132, H05B 608
Patent
active
048854476
ABSTRACT:
An inverter bridge of MOS technology transistors applies a series of high frequency power pulses to a disc coil in an electrically-heating of a cooker plate in order to heat a ferromagnetic container on the plate. The transistorized inverter bridge is activated by a control circuit which adjusts the triggering moment of each leg of the transistor bridge to the inductive recovery times of the disc coil and inhibits the functioning thereof in the absence of ferromagnetic load, i.e. container, on the plate. In this manner, the plate is self-igniting when a ferromagnetic container is placed thereon, thereby substantially reducing the electric power consumed in use. The control circuit for activating the transistor bridge is advantageously incorporated in a single integrated circuit in order to reduce maximumly the wiring and cost of assembly.
REFERENCES:
patent: 3506907 (1970-04-01), Porterfield et al.
patent: 4356371 (1982-10-01), Kiuchi et al.
patent: 4426564 (1984-01-01), Steigerwald et al.
patent: 4453068 (1984-06-01), Tucker et al.
patent: 4456807 (1984-06-01), Ogino et al.
patent: 4473732 (1984-09-01), Payne
patent: 4475149 (1984-10-01), Gallios
patent: 4540866 (1985-09-01), Okuda
patent: 4555608 (1985-11-01), Mizukawa et al.
Balay S.A.
Leung Philip H.
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