Another simple building-block kit, a high-current unregulated DC power supply. Four on-board 100V, 3A diodes plus 2200uF/50V electrolytics provide an unregulated power supply from a center-tapped transformer (not included). Sizing and rating information for the required transformer is given in the manual for this kit (see PDF). This kit is a perfect match for our larger amplifier kits that require dual voltages (K50).