Patent ID: 6327163
Filing Date: 2001-12-04
Classification: H02M

Abstract:
A solid state power supply including:a capacitor component connected to be charged from a high voltage source;a thyristor switch through which said capacitor component discharges;a trigger circuit for said thyristor switch, there being a time period between triggering of said switch by said trigger circuit and when said switch should pass full current discharge from said capacitor; anda non-linear impedance output stage for said thyristor switch, said output stage providing an initial high impedance to forward current flow through the switch to a load, said impedance decreasing during said time period to permit substantially full current flow through said stage at the end of said period, and, once full current flow is permitted, providing a substantially continuing high impedance to any back current from said load as a result of the current applied to said load by said power supply.