Just wondering...

NightShift

Enlightened
Joined
Feb 4, 2001
Messages
380
Location
Long Island, NY
I was comparing two different H3 halogen bulbs today and they are the same size, contain the same gas and look to have the same filament size/length. Now what is different that makes one bulb 55 watts, and the other 100 watts? The only thing I can think of is the filament guage?
If it is a change in the filament, i guess it has to pretty darn accurate to produce the right results...

And what is different to make the bulb usable in 12 volts compared to 120 volts or vice versa.
 

Brock

Flashaholic
Joined
Aug 6, 2000
Messages
6,346
Location
Green Bay, WI USA
That a big question, but basically it has to do with the resistance of the filament. They are made different for both voltage used and wattage used. So the envelope or glass really doesn't have much to do with how bright it is. It is confusing isn't it
smile.gif
 
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