Re: [Phys-l] AC LED demonstrator

["Anthony Lapinski" <Anthony_Lapinski@pds.org>]

A classic electricity demo! Use a bicolor LED and a 22k ohm resistor, both
available from Radio Shack. Solder the resistor to one wire (cut slightly
shorter) of an extension cord. Solder the LED to the other end of the
resistor and the other ext cord wire. Tape it, plug in, spin it.
Fascinating!

tmzoughi@kennesaw.edu writes:
> Hi all:
>
> I remember seeing a set-up made up with a power cord connected directly
> to a
> wall outlet and used to demonstrate ac currents. I saw two versions of the
> set up, one with a red LED and the other with a bicolor LED. I am hoping
> that one of you has information on how to build one.
>
> Taha
>
> Taha Mzoughi
> Associate Professor
> Dept. of Biology and Physics
> Kennesaw State University
> 1000 Chastain Rd., #1202
> Kennesaw, GA 30144-5591
> Office: 678 797 2152
> FAX: 770 302 4202
> e-mail: tmzoughi@kennesaw.edu
> http://physci.kennesaw.edu/
>
>
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