PSN-L Message - Subject: Coil and Magnets or Led and photo transistor

PSN-L Email List Message

Subject: Coil and Magnets or Led and photo transistor
From: "tchannel" tchannel@............
Date: Mon, 9 Feb 2009 17:53:48 -0700

 Another question about this site........he uses a LED and Photo =
Transistor in place of the coil and magnet.   I have never used this.  =
Is one better than the other?   This approach would be smaller and =
lighter. =20


http://tinkeringcaveman.googlepages.com/home








 Another question about this =
site........he=20
uses a LED and Photo Transistor in place of the coil and =
magnet.   I=20
have never used this.  Is one better than the other?   =
This=20
approach would be smaller and lighter.  
 
 
http://tinkeringcav=
eman.googlepages.com/home
 
Thanks, Ted

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