GW Instek GPC-3030D Triple Output, High-Current DC Power Supply

Wire two single-output models with the same range in a master/slave circuit. A rear panel switch lets you select either master or slave with connections for series or parallel hook-up. Connect in series to double the voltage output; connect in parallel to double the current output. Single-output models also feature a HI/LO range button for current output; the LO range provides a better resolution through a portion of the range.
Triple output model features two independent variable power supplies and one 5 VDC fixed output. Easily set up a master/slave circuit with this model. Connect the two independent power supplies in series or parallel simply by pressing a button.