The undesirable effect of light emitting diode (LED) lamps oscillating in brightness is often a consequence of fluctuations in the electrical power supply. This rapid variation can manifest as a perceptible strobe-like effect. A common example involves a newly installed LED bulb exhibiting a noticeable shimmer, particularly when other appliances are simultaneously drawing power on the same circuit.
Understanding the origin of this issue is important for ensuring consistent and comfortable illumination. Addressing this light instability is beneficial, potentially preventing eye strain and headaches associated with prolonged exposure to flickering light sources. Historically, incandescent lighting was less prone to such issues due to the thermal inertia of the filament; however, the solid-state nature of LEDs makes them more susceptible to voltage and current variations.
