Motorized crushing apparatus

A motorized crushing apparatus, comprising:

• a zero voltage detector coupled to an AC power source, wherein when a varying voltage of the AC power source is below zero, the zero voltage detector generates a first signal, wherein when the varying voltage of the AC power source is above zero, the zero voltage detector generates a non-zero signal;
• a manual switch for a user to select a crushing pattern from multiple candidate crushing patterns;
• a motor driver coupled to the AC power source;
• a motor coupled to the motor driver to carrying a crushing device to crush an object in a container;
• and
• a controller coupled to the zero voltage detector, the manual switch and the motor driver, wherein the controller generates a control signal corresponding to the selected crushing pattern to alternatively turn on and turn off the motor driver under a schedule pattern, wherein different candidate crushing patterns correspond to different control signals of different schedule patterns for crushing the object into different sizes and shapes.