Editing Fluorescent lamp (section)

===Power quality and radio interference===
Simple inductive fluorescent lamp ballasts have a [[power factor]] of less than unity. Inductive ballasts can be connected to, or may include, power factor correction [[Capacitor|capacitors]]. Simple electronic ballasts may also have low power factor due to their rectifier input stage.

Fluorescent lamps are a non-linear load and generate harmonic currents in the electrical power supply. The arc within the lamp may generate radio frequency noise, which can be conducted through power wiring. Suppression of radio interference is possible. Very good suppression is possible, but adds to the cost of the fluorescent fixtures.

Fluorescent lamps near end of life can present a serious radio frequency interference hazard. Oscillations are generated from the negative differential resistance of the arc, and the current flow through the tube can form a tuned circuit whose frequency depends on path length.<ref>{{cite web|url=https://interferencetechnology.com/rf-emissions-of-compact-fluorescent-lights/|title=RF Emissions of Compact Fluorescent Lights|date=17 December 2012|access-date=2019-03-14 |archive-date=2021-02-27 |archive-url=https://web.archive.org/web/20210227150226/https://interferencetechnology.com/rf-emissions-of-compact-fluorescent-lights/|url-status=live}}</ref>