Specific portable CW YAG laser power supply with a superimposing supply adjusted by cascaded transistors

A novel power supply with a superimposed power supply adjusted by cascade transistors was developed and specifically used for CW YAG lasers pumped by double Kr lamps specifically. Benefiting from the characteristic of the operating voltage of the Kr lamps, this power supply can be adjusted by using a superimposed small power supply which is a transistor current stabilized source. This power supply possesses the same stability as the conventional one while deserting the cumbersome high power voltage transformer.