Message-ID: <001001c49402$4eb5cfc0$edce28c3@erica>
From: "g3ldo" <g3ldo@ukonline.co.uk>
To: rsgb_lf_group@blacksheep.org
References: <EPECIMHCBLPKNKKFIKKOOEAHDNAA.f6agr@wanadoo.fr>
Date: Mon, 6 Sep 2004 12:11:04 +0100
MIME-Version: 1.0
Subject: LF: Re: Save energy, but generate QRM ...
Content-Type: text/plain; charset=iso-8859-1; format=flowed
Content-Transfer-Encoding: 8bit
Sender: owner-rsgb_lf_group@blacksheep.org
Precedence: bulk
Reply-To: rsgb_lf_group@blacksheep.org

 Jean-Louis F6AGR said:

> Let me introduce to you a new candidate to the "Ugliest 137 kHz QRM
> generator Challenge".
> I'm talking about the Philips SL.E Pro 16W Warm White light bulb.
> This light bulb (quite expensive) saves energy and uses only 16 watts AC
to
> produce the same light as a 100 watts conventional light bulb, but
generates
> an horrible noise (multiple discrete frequency lines) all over the 137 kHz
> band.

About three years ago I tentitively tried out one of these energy saving
bulbs and didn't find any interference throughout the LF/HF spectrum and
have, over a period introduced more into the house. These bulbs do save a
lot of energy, which is a consideration with cost of energy in this country.
So perhaps we could draw up a list of low energy bulbs that don't cause
interference.

Most of the bulbs I have are cheap ones from Woolworths and are described as
BIAX V257 made by GE Lighting.

As regards electronic 'transformers' could the fix be just to replace it
with a conventional transformer?

Peter, G3LDO