Patent ID: 6507161
Filing Date: 2003-01-14
Classification: B04B

Abstract:
A centrifuge comprising:a basket arranged to receive materials; a motor interconnected to said basket; and, a motor controller coupled to said motor, said motor controller comprising: at least one power cell coupled to a main power supply and arranged to control a voltage applied to said motor, wherein said voltage adjusts the rotational speed of said motor, a first contactor coupling said at least one power cell to said motor, said first contactor switchable between a first state wherein an electrical connection is made between said at least one power cell and said motor, and a second state wherein an electrical connection is broken between said at least one power cell and said motor, and, a logic control module coupled to both said at least one power cell and said first contactor, said logic control module arranged to control said at least one power cell and said first contactor to selectively apply power to said motor during at least acceleration operations of said motor.