Jack Smith wrote:
A few months ago, I looked at the power consumption and radiated
interference from a typical inexpensive CCFL. Also disassembled the
lamp to look at the ballast PCB.
Details are at http://www.cliftonlaboratories.com/compact_fl.htm
Jack K8ZOA
www.cliftonlaboratories.com
There is an excellent page of CCFL schematics and photographs at:
http://www.pavouk.org/hw/lamp/en_index.html
Many of these will be sold in the West under a range of different brand
names. Also, the same catalog listing may not always be the same
product.
There are obvious differences in filtering of the supply line - some
don't even have it, and EMC compliance markings are frankly worthless.
Another important difference is the quality of light and the warmup time
to full brightness.
For all of these reasons, it pays to try samples of several different
types before making a bulk buy for the whole house. Hams should probably
dismantle them to check for filtering components (with obvious safety
precautions - the glass is very fragile).
--
73 from Ian GM3SEK 'In Practice' columnist for RadCom (RSGB)
http://www.ifwtech.co.uk/g3sek
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