The 6274B Power Supply is a CV/CC supply that employs a transistor series-regulator, triac-preregulator circuit to achieve high efficiency, excellent regulation, low ripple and noise, and moderate programming speeds in a compact, full-rack-width package. Separate coarse and fine voltage and current controls vary output from 0 to 60 V and 0 to 15 A. Crossover from constant voltage to constant current operation occurs automatically when the load current exceeds the value established by the current control settings.