Two methods exist to light an LED: the static lighting method, where a steady current is fed without a break; and the dynamic lighting method, where current is continuously input in ON-OFF pulses. If the pulses are short, the human eye perceives dynamic lighting as static lighting. The use of high-frequency lighting makes dynamic lighting appear continuous for a stationary observer. Although when the frequency drops below a specific value, the naked human eye can notice a flickering effect.
Choosing Static or Dynamic Lighting for LEDs
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