Process and device for controlling power for a circuit for induc

Details Process and device for controlling power for a circuit for induc Process and device for controlling power for a circuit for induc

1994-02-16

1997-04-22

Leung, Philip H.

Electric heating

Inductive heating

With heat exchange

219626, 219665, 99325, H05B 608

Patent

active

056226438

ABSTRACT:
This invention relates to a process and a device for controlling power for a circuit comprising a resonant inverter intended to supply a variable impedance load comprising an inductive component. The invention renders the active power consumed by the load independent of the nature of the load by producing an error signal that is a function of an average value of a current passing through power transistors of the inverter, this error signal being used to control a power modulator controlling the switching of the power transistors. Such a process and device finds particular application to a circuit for controlling power supplied to an inducer and a cooking utensil.

REFERENCES:
patent: 4319109 (1982-03-01), Bowles
patent: 4595814 (1986-06-01), Ogino et al.
patent: 4638135 (1987-01-01), Aoki
patent: 4686340 (1987-08-01), Fukasawa
patent: 4810847 (1989-03-01), Ito

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