Originally Posted by DCCommuter
Bulb life declines dramatically with increased voltage. My gut feeling is that at 18V a 12V light would burn out within a few minutes. It would be bright though.
That would be incredibly bright for a few seconds. I shorted 12 volts across a 6 volt bulb once. Went in about 2 seconds. The current surge could also be enough to damage the wiring. 18V? Get a voltage regulator. The Allied catalog has lots of them. Tell them what you want to do when you order.
Last edited by ken cummings; 01-12-06 at 07:45 PM.