Patent ID: 7366000

Claim:
A half bridge inverter connected to a first side of a transformer and converting a DC power to an AC power, said half bridge inverter comprising: a push/pull control chip having a first output terminal and a second output terminal, said first and second output terminals separately outputting a first control signal and a second control signal both with a duty cycle smaller than 50%; a first switch coupling to a reference terminal and said first output terminal of said push/pull control chip; a current limiting resistor coupling to said first switch and said DC power; a second switch coupling to said first switch and said reference terminal and to said DC power via said current limiting resistor; an SCR switch having a gate coupling to said second switch and an anode coupling to said DC power; a first N-MOS having a gate coupling to a cathode of said SCR switch and a drain coupling to said DC power and a source coupling to said first side of said transformer; and a second N-MOS having a gate coupling to said second output terminal of said push/pull control chip and a drain coupling to said source of said first N-MOS and a source coupling to said reference terminal.