Compact Fluorescent Lamp - switch on current ? - sci.electronics.repair

Message from discussion Compact Fluorescent Lamp - switch on current ?

N Cook

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More options Jul 26, 4:41 pm

Newsgroups: sci.electronics.repair

From: "N Cook" <diver...@gazeta.pl>

Date: Sat, 26 Jul 2008 12:41:15 +0100

Local: Sat, Jul 26 2008 4:41 pm

Subject: Re: Compact Fluorescent Lamp - switch on current ?

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=Franc Zabkar <fzab...@iinternode.on.net> wrote in message

news:130i8413aesdbmk63l3tckhu7at7re4qch@4ax.com...

> On Thu, 24 Jul 2008 16:23:51 +0100, "N_Cook" <dive...@tcp.co.uk> put
> finger to keyboard and composed:

> >15W filament lamp controlled by a tiny reed relay, on for a total of a
> >couple of hours a day. Been in use for 20 years or so. Decided to replace
> >the working 15 filament one with a 11W CFL but on first switch on, the
> >contacts ,presumably only 0.5A rating or so, held on at switch off.

> >A slight tap releases them but of course no good with continued CFL use
> >unless uprating the relay. Previously stuck contacts occured 10 years or
so
> >back when the first 15W bulb blew, plasma arc current at failing
switch-on
> >presumably.

> >What is the switch on current of CFLs compared to conventional just out
of
> >interest ?

> Here are several reverse engineered CFL circuits:
> http://www.pavouk.org/hw/lamp/en_index.html

> The author writes ...

> "During start is peak collector current about 3 to 5 times bigger than
> during normal operation."

> - Franc Zabkar
> --
> Please remove one 'i' from my address when replying by email.

Whatever technical stuff you ever wanted to know about CFLs on there

--
Diverse Devices, Southampton, England
electronic hints and repair briefs , schematics/manuals list on
http://home.graffiti.net/diverse:graffiti.net/

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