IEEE 1789-2015

The scope of this recommended practices document is to  Define the concept of modulation frequencies for light-emitting diodes (LEDs) and discuss their applications to LED lighting. – Describe LED lighting applications in which modulation frequencies pose possible health risks to users. – Discuss the dimming of LEDs by modulating the frequency of driving currents/voltage. – Present recommendations for modulation frequencies (flicker) for LED lighting and dimming applications to help protect against known potential adverse health effects.