Installer and designer slang for the LED fault where a light dimmed low will not start, then pops on at a higher level as the slider moves up. Its cousins are drop-out, where the light cuts off before the bottom of the range, and dead travel, a stretch of dimmer movement with no change. Causes include incompatible phase-cut dimmers and drivers, too little load on the dimmer, and mismatched minimum settings.
Kitchen cans have pop-on below 20 percent, set the low trim on the dimmer up or swap to the reverse-phase model.
Also heard as
- pop-on effect
Related terms
Dimming curve
The relationship between a dimmer or control signal and the light output it produces.
Driver
The electronic power supply that converts line voltage into the regulated current or voltage an LED needs.
Ghosting
A faint glow from LED fixtures that are switched off, caused by small leakage currents in the wiring or controls.
0-10V
An analog dimming method in which a low-voltage DC signal from 0 to 10 volts sets driver output.