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From: Tony Williams
Subject: Re: Current draw of several light bulbs?
Date: Wed, 11 Dec 2002 23:13:31 +0000 (GMT)
NNTP-Posting-Date: Wed, 11 Dec 2002 23:13:50 +0000 (UTC)
User-Agent: Pluto/1.14i (RISC-OS/3.60)
In article ,
John Woodgate wrote:
> You don't need to uprate the transformer, because the inrush last for
> only a few milliseconds, but it kills lamps rather frequently. That is
> why I recommend a thermistor.
This has been vigorously debated in another newsgroup.
The problem with "inrush kills bulbs" is that the
accumulated data on traffic lights has shown that
the amber bulbs have about the same life as the
red/green bulbs. There are several URLs giving
this data, but I never bookmarked them.
"Inrush kills bulbs" seems to come from the fact
that they always seem to blow at switch-on. It is
more probable that the bulb was on its last legs
and would have blown shortly anyway.... the inrush
just gave it a fractionally earlier coup de whatsit.
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