For Sale: Elenco Model XP-581 Bench Power Supply. Great bench supply to have when building, testing and experimenting with circuits. The power supply has 4 independent supplies and a regulated variable power supply that is adjustable from +2.5 volts to +20 VDC, and three fixed DC supplies: one +12V at 1 amp, one -12V at 1Amp, and one +5V at 3 Amps. The power supply is in excellent condition and works great. It comes with the manual and schematic on CD. $79 with free shipping to the lower 48 states.