AC Filters

Rechner Sensors

OnFILTER : Reduce EMI and Improving Reliability

On Filter / By

Servo and stepper motors, and VFD have two major EMI-related problems: excessive electromagnetic interference in equipment, and damage to the motor bearings caused by excessive high-frequency currents flowing through them. Vibration that causes problems for precision positioning, is also one of the artifacts of bearing damage.

Rechner Sensors

Ground and EMI

News / By

Ground is presumed to be a “safe haven” for sensitive components. All grounded surfaces and connections are supposed to be “equipotential” i.e. with no voltage difference between them. This assumption may work only for DC. At high frequencies a wire is an inductor presenting impedance, and isolated wires and metal parts are plates of capacitors …

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