Electromagnetic interference (EMI) on power lines and ground creates serious problems for operation of equipment and can even damage sensitive components.  The main focus of OnFILTER is design and manufacturing of filters for reducing noise on power lines and ground for real-life installations.  Sensitive equipment  shares power lines and ground with many types of machinery and tools, not all of them noise-free.  Simple turning on and off one tool can cause severe high-frequency spikes throughout the facility.  Such common items as light dimmers, solenoids, stepper and variable frequency motors, controlled heater elements and others greatly contribute to noise on power lines and ground.