2 x 0–30 V 3 A UniLab bench supply based on a switching regulator
The UniLab bench supply we published in the Aug/Sept 2011 issue of Elektor has proved very popular. Here we show how to extend the project into a twin-output supply taking full advantage of the dual voltage/current display published in the same issue, including wiring plan and front panel design.
UniLab is a bench power supply based on a switching regulator. Technical details and a circuit description can be found on the Elektor website ; and you can purchase the printed circuit board (order code 090786-1) from the Elektor Shop, as well as a kit of parts (090786-71) which includes the printed circuit board along with all components apart from the mains transformer. For the twin-output version of the supply we need two populated boards plus the dual voltage/current display circuit. The four-line by twenty-character display shows the two output voltages and output currents as well as temperature inside the unit’s enclosure.
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