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 do 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.

To set the current limit, temporarily short the '''-''' and '''+''' terminals together with a piece of wire or (ideally) a banana plug patch cord. The Make sure this conductor is large enough to safely carry the current you're dialing in. If necessary, raise the voltage limit until the supply should be is in CC mode, with the '''C.C.''' LED lit. Adjust Then, adjust thecurrent knobs until the readout above them indicates the desired current. Make sure  Note: There are three terminals on this supply, '''+''', '''-''' and '''GND'''. '''+''' and '''-''' are the positive and negative terminals between which supply current flows, and are the conductor two terminals you normally use . '''GND''' is a direct connection to short the terminals together is large enough to safely carry ground prong on the wall outlet; you use this if the current circuit you are powering requires a safety ground, or if youneed '''-'''re dialing into be held at local ground voltage.