Trophy Case LED Driver Ripple Measurement for Stable Exhibit Lighting
Intent: identify/document. Trophy case LED driver ripple measurement is the process of quantifying the residual AC voltage variation that persists in a constant-current or constant-voltage LED driver’s DC output after conversion from mains power. Every LED driver extracts direct current from alternating current; the conversion is never perfectly clean, and what remains is a cyclic output fluctuation — ripple — that mirrors the mains frequency or its harmonic. On a 60 Hz supply, ripple typically completes 120 cycles per second. At levels above accepted thresholds, that variation modulates the trophy case fixture’s light output at the same frequency, producing the conditions that cause visible flicker to photosensitive visitors, rolling bands in video footage, and color inconsistency across display zones. This guide walks school facilities teams through recognizing the symptoms of high-ripple LED drivers, understanding what the measurement reveals, completing a structured seven-step documentation procedure, and determining when findings require escalation to a qualified electrical installer.
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