3 ms·
Isn’t the ballast only required for a fluorescent bulb?
by etrautmann 5y ago
Isn’t the ballast only required for a fluorescent bulb?
- masklinn 5y agoThey probably mean lampshade / directionality. Ballasts are a current-limiting device, they would not influence the light geometry.
- jonstewart 5y agoThey meant the LED device, ie “bulb.” DC’s transportation department referred to it as a ballast; that might be inaccurate.