A dc-to-dc power converter, comprising a transformer, a single primary-side power switching device and a parallel combination of a diode and a capacitance, is controlled to operate in a "natural" zero-voltage switching mode such that the power switching device is switched with zero-voltage thereacross....http://www.google.es/patents/US5594629?utm_source=gb-gplus-sharePatente US5594629 - High-frequency switching circuits operable in a natural zero-voltage switching mode
High-frequency switching circuits operable in a natural zero-voltage ...
