Embodiments of circuitry, which includes power supply switching circuitry, a first inductive element, and a second inductive element, are disclosed. Stump cutting assembly is a stump cutting tooth interconnected to the wheel by a holder or block that is fixed to wheel by welding or other equivalent process, an optional debris deflector and a fastener that interconnects tooth and deflector to holder. Each of the plurality of sidewalls comprises a plastic material. Together, the divider walls, interior columns, base, and outer wall structure define a plurality of bottle retaining pockets, where each pocket includes at least one divider wall and is sized to receive a single bottle therein. Embodiments regulate the DC-bus voltage or current to an optimized value such that power losses for load and grid conditions are minimized or reduced, and voltage and current ripple is minimized. The display device, the indication arrangement, the first illumination member, and the second illumination member are integrally received and supported by a bracket to constitute a display unit.