Electric heating – Inductive heating – With heat exchange
Patent
1993-02-10
1994-07-12
Leung, Philip H.
Electric heating
Inductive heating
With heat exchange
219664, 219665, 363 49, 323285, H05B 612
Patent
active
053291000
ABSTRACT:
A circuit for compensating for the output of a high frequency induction heating cooker, comprising a rectifying circuit for rectifying an external AC input power into a DC power and applying the DC power to a working coil, an output regulation signal generating circuit for generating an output regulation signal as a result of the comparison of an input voltage and an output regulation voltage, a start driving circuit for generating a start drive voltage, a triangular wave generating circuit being triggered in response to a driven state of the working coil to generate a triangular wave signal, a switching circuit for start-driving the working coil in response to the start drive voltage, comparing the output regulation signal with the triangular wave signal and switching the driving of the working coil in accordance with the compared result, a voltage detecting circuit for detecting a voltage being applied from the rectifying circuit to the working coil and inversion-amplifying the detected voltage, an output control unit for generating output regulation data according to a user's selection, and a voltage dividing circuit for dividing an output voltage from the voltage detecting circuit according to the output regulation data and outputting the divided voltage as the output regulation voltage.
REFERENCES:
patent: 4456807 (1984-06-01), Ogino et al.
patent: 4467165 (1984-08-01), Kiuchi et al.
patent: 4638135 (1987-01-01), Aoki
patent: 4686340 (1987-08-01), Fukasawa
patent: 4764652 (1988-08-01), Lee
patent: 4810847 (1989-03-01), Ito
patent: 5004881 (1991-04-01), Lee
H. Omori et al., "New Single-Ended Resonant Inverter Circuit and System for Induction-Heating Cooking Apparatus"-International Journal of Electronics-vol. 67, No. 2, Aug. 1989, London GB pp. 277-296.
Goldstar Co. Ltd.
Leung Philip H.
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