Patent ID: 7714525
Filing Date: 2010-05-11
Classification: F25C,H02P

Abstract:
1. A reversing circuit for a DC gear motor used in ice delivery apparatus to enable selective operation of the motor in clockwise and counter-clockwise directions, the circuit comprising: (a) a plurality of MOSFET H-Bridges connected to the DC gear motor; and (b) peripheral circuitry connected between an AC power source and the MOSFET H-Bridge to rectify the AC power source and supply power to the DC gear motor, wherein the plurality of MOSFET H-Bridges includes only a first pair of MOSFETs located diagonal from each other and a second pair of MOSFETs located diagonal from each other, the first pair of MOSFETs and second pair of MOSFETs connected in an “H” bridge, the motor turns in a first direction when the first pair of MOSFETs are turned on and the motor turns in a second direction opposite to the first direction when the second pair of MOSFETs are turned on, and when the motor turns in the first direction, the motor delivers cubed ice, and when the motor turns in the second direction, the motor delivers shaved ice.