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Do CFLs cause electromagnetic interference? Follow

Similar to linear fluorescent lighting and other electronics, it is possible for Compact Fluorescent Light Bulbs (CFLs) to cause electromagnetic interference (EMI). Electromagnetic interference is regulated by the Federal Communications Commission (FCC), and ENERGY STAR includes these requirements by reference for CFLs. In addition, ENERGY STAR requires CFLs to use ballasts that operate at greater than 40 kHz, which limits the potential for interference. Finally, ENERGY STAR requires that the product package clearly state any devices that the CFL has potential to interfere with. This information is usually found along with other statements of known incompatibility with controls and application exceptions.

More on ENERGY STAR qualified CFLs.

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