| 摘要 |
<p>The present invention relates to an induction heating cooktop (1) with at least one double-coil heater (3) having concentrically disposed induction coils in the form of inner and outer ring induction coils (9, 10) and a power circuit (4) for powering said double-coil heater (3), said power circuit (4) comprising a rectifier (12) rectifying the alternating signal, a filter circuit (F1, F2) and an inverter stage (S1, S2) associated with said inner and outer ring induction coils (9, 10), each inverter stage (S1, S2) comprising a respective inner and outer ring switching device (7, 8) in parallel with a reverse-biased freewheeling diode.</p> |
