line 43 and output return 45 an output rectifier 54 for the flyback power stage is connected to the main flyback transformer 64 a pulse width modulator ic 68 generates the drive pulses to attain a switching duty cycle in the p channel mosfet 60 that produces the desired overall output voltage from the flyback circuit a feedback isolator 70 transfers the feedback error signal across the galvanic barrier from the input side 41 to the isolated output side 43 and 45 a reference and error amplifier 72 compares the output signal to a reference voltage and creates an amplified error voltage that will be ultimately transmitted to the pulse width modulator ic 68 this design circuit technique can be extended to employ two or more secondary windings on the drive transformer each secondary driving a suitable rectification and dc restoration circuit the output of each drive rectification and dc restoration circuit will be connected between the gate and source of a p channel fet in such a configuration the two or more transformer secondary windings may be used to drive the fets in an in phase or out of phase arrangement depending on the desired configuration for the switching fets although the present invention has been described with reference to dc dc converters the same principles outlined above may be used for motor drives solid state relays and power switches among other electrical applications in the preceding specification the invention has been described with reference to specific exemplary embodiments thereof it will however be evident that various modifications and changes may be made thereto without departing from the broader spirit and scope of the invention as set forth in the.