WHAT IS RADIO FREQUENCY INTERFERENCE (RFI)?
RFI is a buzzing noise which may occur in some audio and radio equipment when solid-state dimmers are used nearby. Although every Lutron dimmer contains a filter to suppress RFI, additional filering may be required in some applications. Typical examples of RFI-sensitive equipment are AM radios, stereo sound systems, broadcasting equipment, intercom systems, public address systems, and wireless telephones. RFI can be transmitted in two ways: • Radiated • ConductedNote: The suggestions in this application note will help minimize RFI: however, they do not guarantee that RFI will be completely eliminated. Radiated RFI Any sensitive equipment that is in close proximity to dimming equipment can pick up the RFI and generate noise into its system. The following are three possible ways to minimize the readiated RFI: • Physically separate the RFI-sensitive equipment from the dimmer and its wiring. Run dimmer wiring separate • Use a lamp debuzzing coil (available from Lutron) to filter the RFI.Co
