IEEE 1789-2015 PDF Download

The IEEE 1789-2015 standard addresses the issue of modulation frequencies (flicker) in LED lighting and its potential health risks to viewers. The standard provides a definition of modulation frequencies for LEDs and discusses their applications in LED lighting. It also identifies LED lighting applications where modulation frequencies might pose health risks to users.

Additionally, the standard discusses the dimming of LEDs by modulating the frequency of driving currents/voltage. It recognizes that there are no existing standards on safe modulation frequencies for high-brightness LEDs and highlights the risks associated with low-frequency modulation. The document references previous studies that have shown health-related problems associated with fluorescent lighting with magnetic ballasts modulating at frequencies correlated to the AC line frequency.

The purpose of this standard is to provide recommended practices for the design of LED driving systems to modulate at frequencies that mitigate the potential health risks associated with modulation. By offering these recommendations, the standard aims to protect viewers from adverse health effects caused by low-frequency modulation of high-brightness LEDs.