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From: "Alan Melia" <alan.melia@btinternet.com>
To: <rsgb_lf_group@blacksheep.org>
References: <1794381892.23372.1236524009509.JavaMail.mail@webmail03>
Date: Sun, 8 Mar 2009 15:42:14 -0000
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Subject: LF: Re: energy saving bulbs
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Peter some do and some dont. I have found the Osram bad and the Philips best
so far. There are a number of other things to think about too.
One, in normal replacement for tungten Fil they do NOT last 10,000 hours.
The reason seems to be that in a normal vertical hanging fitting the
connector end of the assembly get very hot....... this bit of course
contains the electronics which get unreliable with increasing temperature.
Bulb life test on fil bulbs is traditionally done the "other way up" for
ease of loading....so maybe this was not spotted.
They take several 10s of seconds to reach usable brightness....longer than
tuble starters. No good for short spells of activity as they are only
becomming usable when they are switched off.
They do contain mercury, albeit a small amount.
They should not be used in reading lamps which come close to the face as
there is a signigicant UV content.
I have just been using one in a bedside lamp and after a couple of days
relised I could smell a similar smell to that close to a Xerox
machine.....yes the lamp was pproducing sufficient ozone to significantly
irritate the nostrils.

I have a large stock of filament lamps!! but I use tube fluorescents for
main lighting which are even more efficient in terms of light for energy (no
a lot of "greenies" or lamp manufacturers admit that, and my tube
fluorescents are radio quiet for antennas outside the house. I have
relagated the CFLs to outside lighting fittings, which I occasionally forget
to switch off!!

The tale that filament lamps are inefficient is a myth !! All the energy fed
to the bulb is converted into radiation ! some is light and some is
heat.....a CLF just produces less heat and more light and more polution!

Alan G3NYK
----- Original Message -----
From: "Peter Cleall" <peter.cleall@virgin.net>
To: <rsgb_lf_group@blacksheep.org>
Sent: Sunday, March 08, 2009 2:53 PM
Subject: LF: energy saving bulbs


>   For many years I have avoided using the energy saving bulbs under the
impression that they were major RF pollutents. I am under increasing
pressure to move to using these bulbs.
>
>
>
>    Are my concerns still the case or are they old fashioned and out of
date.
>
>   Do you have experience of using these bulbs in the home.
>
>   Do modern versions interfer with your Radio receiving , I am interested
in signals from 15 kHz to 500 MHz.
>
>   Are there specific types or manufactures to be avoided
>
>   Any thoughts would be appreciaated
>
>   regards
>
>   peter
>
>
>
>
>