Re: Experimental Help - Terry?

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Jim Lux by way of Terry Fritz <twftesla-at-qwest-dot-net>" <jimlux-at-earthlink-dot-net>


> > high wattage bulbs have pretty low filament resistance.  E.g. 100W
> > lightbulb has about 1 ohm resistance (hot) at 1 amp (RMS).. probably a
> > tenth that cold.
> 
> Woops.  For 100 watt, 120 volt bulbs the operating resistance is
> (120)^2/100, or 144 ohms.  Did I misunderstand what you are saying?
> 

You're right... I was thinking 1 Amp....

A 300W halogen bulb is about 4 ohms (cold)...