Patent ID: 7190091

Claim:
A power supply comprising: an input stage comprising, an input connector to couple said power supply to either of an alternating current input voltage and a direct current input voltage; an alternating current path; a direct current path; an input selector switch to determine which of said alternating current input voltage and said direct current input voltage is coupled to said power supply, to couple said input stage to said alternating current path in response to a determination that said alternating current input voltage is coupled to said power supply, and to couple said input stage to said direct current path in response to a determination that said direct current input voltage is coupled to said power supply; a shared output stage to couple said power supply to a load, wherein said shared output stage is coupled to said alternating current path and said direct current path, the shared output stage further comprising: an output transformer; a low voltage transistor coupled to a first portion of said output transformer; a high voltage transistor coupled to a second portion of said output transformer; and a control element; and a control selector switch to couple said control element to said high voltage transistor in response to said determination that said alternating current input voltage is coupled to said power supply, and to couple said control element to said low voltage transistor in response to a determination that said direct current input voltage is coupled to said power supply.