default wrote:
On 15 Oct 2006 07:43:59 -0700, wrote:
A 24v bulb is likely to be a 28-29v bulb in reality, running this on
21v will give a very poor result. OP needs to tell us if the 24v
reading is under load or not. If its with no load, OP needs a 21v bulb,
anything else will just be crap. Depending on the type of psu, it may
be possible to change the output voltage to suit other bulbs
voltage-wise. Whether they will have the right optical situatoin is
another matter.
NT
Then one is "second guessing" the lamp specifications, the
manufacturer specifications, and the ops application.
Not really. The vast majority of 24v bulbs are for road use, where
nominally 24v systems are IRL approx 28-29v. The lamps are designed to
run on those systems.
I suppose the OP could underpower the bulb as you say, but its not the
best option. It should work, but 21v on a 28v bulb will give lousy
results.
NT