| 摘要 |
An improved induction heating apparatus comprises a full bridge inverter with each inverter leg fabricated of first and second serially coupled field effect transistors. A control apparatus coupled to the gate of each field effect transistor of each leg alternately renders the first and second field effect transistors of each inverter leg conductive. By varying the phase delay between initiation of alternate conduction of the field effect transistors of one inverter leg and subsequent initiation of alternate conduction of the field effect transistors of the other inverter legs in response to operator commands, smooth induction heating apparatus power control is achieved.
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