Digital power supply

BMOW.

The bottom right chips are two DACs. Either they're used to drive the power transistors, or (which would be a sad thing) they're used to drive the LC displays on the front.

The two green relays are used for two thing: a) connect/disconnect the voltage from the screw terminals on the front, b) short + to - for offline current adjustment. This plays an important role when the fuses for the microcontroller blow.

Both relays are SPDT. One is connected as "normally closed", the other one as "normally open".