Patent ID: 6774507
Filing Date: 2004-08-10
Classification: H02J,H02M

Abstract:
A highly reliable direct current (DC) power supply unit comprising:a transformer having a first and a second primary winding and one secondary winding; a first input power train unit for converting DC into a first pulse width modulated (PWM) signal, said first input power train connected to a first source of power, the output of said first power train unit being connected to said first primary winding of said transformer; a second input power train unit for converting DC into a second pulse width modulated (PWM) signal, said second input power train connected to a second source of power, the output of said second power train unit being connected to said second primary winding of said transformer; an output power train unit connected to a secondary winding of said transformer, said output power train receiving an input from said secondary winding and converting said input into a reliable DC output power sources; wherein said transformer provides DC isolation between said first source of power and said second source of power.