A power inverter for a polyphase load such as an AC motor is provided which is designed to minimize an on-off switching loss of transistors installed in the inverter. The inverter works to disenable switching operations of the transistors for each phase in a first cycle during which a corresponding output...http://www.google.ca/patents/US6690593?utm_source=gb-gplus-sharePatent US6690593 - Power inverter designed to minimize switching loss
