PDA

View Full Version : compass light



1529
10-03-2007, 02:40 PM
My compass takes a GE323 bulb. In the power wire to the light there is a resistor. What is its purpose and resistance value?

rbriggs27
10-03-2007, 04:01 PM
I'm making a few assumptions here.

Apparently the 323 is a 3 volt bulb, which means the resistor is likely a voltage dropping resistor wired in series to the bulb, basically "using up" about 10 volts of the battery output so as to not pop the bulb. The resistor is probably a little over 3 times the internal resistance of the bulb. And I'll bet it gets hot!

Glen Geller
10-03-2007, 06:19 PM
If yo need a cheap source for the GE323, use the SEARCH function above and enter GE323, you'll see my previous post with a source and other witty banter.
$2.10 each, ya can't beat that price! Min order $10 so you get enough to lasty a lifetime.

p_everette
10-03-2007, 07:12 PM
Try here

http://www.airsuppliers.com/Aircraft_Parts/GE323.htm

Phil

Tom T.
10-03-2007, 10:40 PM
Maybe you could just buy one from Glen.