They are real "rubbery" in this mode. Not the same increasing as decreasing 
either!
I have used a 12v lamp in series with an automotive source to charge 11 volt 
NiCad Batteries. They start with a bright light and taper off to a trickle 
on their own.  Pick the right lamp current by the battery capacity. Too 
simple to sell!

John Ferrell    W8CCW
"My Competition is not my enemy"
http://DixieNC.US

----- Original Message ----- 
From: "Harold Hallikainen" <harold@hallikainen.org>
To: "Pic List" <piclist@mit.edu>
Sent: Thursday, January 04, 2007 10:57 AM
Subject: [EE] Incandescent Light Bulb as Current Limiter


> I'm considering using an incandescent light bulb as a current limiter in a
> circuit, but having trouble finding voltage versus current data for light
> bulbs. All my Google searches turn up consumer info on people that want to
> sell me light bulbs. Using the term ballast turns up stuff on fluorescent
> lamps. Using constant current turns up stuff on LEDs. So, anyone know
> where such data may exist?
>
> THANKS!
>
> Harold
>
>
>
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