Changes

To operate this supply, you set --upper limits -- for both output voltage and output current. The supply then initially tries to keep its output at the voltage limit, by allowing current to vary. This is called "constant voltage" (CV) operation, and the '''C.V.''' LED is lit when operating in this mode. If the current needed to maintain this voltage exceeds the current limit, then the supply operates in "constant current" (CC) mode instead, and the '''C.C.''' LED is lit instead of '''C.V.'''. In CC mode, current is held constant by allowing voltage to vary. This supply can therefore be used as either a constant voltage source ''or'' a constant current source! To provide constant voltage, set the current limit higher than the current your load will draw at the intended voltage. To provide constant current, set the voltage limit higher than the voltage needed to drive that much current through the load.