On Mar 15, 3:45 pm, Mark Lloyd wrote:
On Thu, 15 Mar 2007 13:06:58 -0500, "dnoyeB" wrote:
On Thu, 15 Mar 2007 05:32:34 -0700, Expat wrote:

I've read conflicting messages on the internet. Some sources say that
USA lamps can handle the increased voltage just fine w/o a step down
transformer,others say I need to change the ballast or use step-down
transformers.Thanks for any clarity on this!

Voltage is the enemy of bulbs. Generally speaking, the lower the voltage,
the longer the life. So even if the bulb is designed for 250V, if its
standard incandescent technology, then its life is probably shorter.

Those tabs they used to sell to put in bulb sockets would increase bulb
life because they slowed the inrush current and lowered the voltage by
adding a bit of resistance.

The ones I remember used a diode.

Decreased performance too, but...

Funny thing is, rotary dimmers will significantly extend the life of bulbs
if they are designed such that they have to be turned on from low to high,
and can not be pushed instantly on.

--
Mark Lloydhttp://notstupid.laughingsquid.com

"How could you ask me to believe in God when there's
absolutely no evidence that I can see?" -- Jodie Foster

Thanks for the advice,great forum!