| 摘要 |
A half sine wave resonant drive circuit provides a greater duty cycle range of operation without a loss in power, particularly at higher frequencies. A resonant circuit (32) is capacitivly coupled to a single switching device (36) to provide the greater duty cycle range by recycling the gate charge of the switching device through the resonant circuit. A half sine wave drive signal is thereby produced from an input square wave signal. The driving amplitude is constant for operation over the range of duty cycles. <IMAGE>
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