Inductive heating apparatus

Details Inductive heating apparatus Inductive heating apparatus

1980-07-30

1982-07-06

Reynolds, B. A.

Electric heating

Metal heating

Of cylinders

219 1049R, 363 80, 363 97, H05B 504

Patent

active

043385036

ABSTRACT:
Inductive heating apparatus includes serially connected first and second transistors which are alternately caused to conduct by a control circuit. A resonant circuit including an induction heating coil and a capacitor is connected in parallel with the second transistor. When the first transistor conducts a first current flows to charge the capacitor and when the second transistor conducts a second current flows in the resonant circuit to discharge the capacitor. The control circuit produces a turn-off signal to the conducting transistor before the current through the conducting current falls to zero and also produces a turn on signal to the nonconducting transistor when the current through the conducting transistor reaches zero.

REFERENCES:
patent: 3391329 (1968-07-01), Myer
patent: 3448367 (1969-06-01), Corey
patent: 3665293 (1972-05-01), Keiler et al.
patent: 4115676 (1978-09-01), Higuchi et al.

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