Text: How The Magnetic Technology Works In a typical application, the MagnaDrive ASD is installed between a motor and the load the motor is driving, generally a pump, fan or blower. The drive is a non-electronic, mechanical device. It consists of two independent components that have no physical contact. One component, a precision rotor assembly containing high-energy permanent magnets, is mounted on the load shaft. The second component, a copper conductor assembly, is connected to the motor shaft. Relative motion between the magnets and the copper creates a magnetic field that transmits torque through the air gap between the components. In effect, the magnetic ``pull'' between the magnets on the load side of the drive and the copper on the motor side creates the coupling force. Varying the width of the air gap changes the coupling force, so the amount of torque transmitted between the motor and load can be continuously adjusted. This allows precise and efficient speed control for optimum performance, including ``soft'' starts and stops. The result is a much more efficient use of energy. Because there is no direct mechanical connection between the motor and load, the MagnaDrive ASD also eliminates the costly wear-and-tear of vibration. http://biz.yahoo.com/prnews/010329/sfth003.html

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