Thanks! Any more ideas on where to find VI curves for incandescent lamps?
I finally DID remember that Amperite used to make ballast tubes. They are
still listed on their web site
(http://www.amperite.com/Uploads/Ballasts.pdf). I called them and they
don't have any in stock or much data on any of them (what do you want for
50 to 70 year old product?). They do have a few partially assembled units
on hand and could finish them off for me at about $100 each... So... light
bulb data, anyone?

Thanks!

Harold



> I used a 60W 230v lamp in series with a 110v valve clock radio when I was
> about 9 years old. I couldn't afford a transformer. It worked amazingly
> well
> but the clock was always slow something to do with the frequency and a
> synchronous motor that didn't like 50 Hz. It always started bright and
> went
> dim as the valves warmed up. Never figured that out ...
>
> It works as a voltage divider so it should work as a current limiter as
> well. The also make good RF dummy loads.
>
> Steve
>
> -----Original Message-----
> From: piclist-bounces@mit.edu [mailto:piclist-bounces@mit.edu] On Behalf
> Of
> Harold Hallikainen
> Sent: 04 January 2007 15:58
> To: Pic List
> 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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