CCFL and Ballast

[Jack Smith-6]

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
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[Henk PA5KT]

Interesting to see the calculations. I pay around € 0.22/kWh. Purchase
prices are about the same as in the USA.
Dont know what other prices are in EU, but for us it is more interesting
to not use the old light bulbs.
In some countries it is forbidden to sell the old light bulb.

Henk PA5KT

Jack Smith schreef:

> 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
> _______________________________________________
> Elecraft mailing list
> Post to: [hidden email]
> You must be a subscriber to post to the list.
> Subscriber Info (Addr. Change, sub, unsub etc.):
> http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/subscribers.htm
> Elecraft web page: http://www.elecraft.com
>

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[gm3sek]

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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