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Forum:	Models & Toys
Topic:	Assistance wiring LEDs for a scale model

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<table border=0 cellpadding=0 cellspacing=0 width="600"><TR><td bgcolor="#000000"><TABLE BORDER=0 cellpadding=4 border=0 cellspacing=1 WIDTH="100%"><TR bgcolor="#660000"><TD COLSPAN=2><CENTER><FONT SIZE="2" COLOR="#ffffff" FACE="arial, helvetica">T O P I C     R E V I E W</font></CENTER></TD></TR><TR bgcolor="#494949"><TD valign=top><FONT SIZE="2" FACE="arial, helvetica">manilajim</FONT></TD><TD><FONT SIZE="2" FACE="arial, helvetica">I am working on an LED project for a model I am planning to build. I have seen different videos on YouTube and still need assistance. <P>Everything will be powered by a 9 volt battery. I want to make a pulse-fade led and need to find a 2N222A transistor. Any sources? <P>Also I have a question about capacitors. I have a 1000 microfahren capacitor. Does the voltage of it matter for my project? Any help in layman's terms will be appreciated. <P>Please no electrical diagrams as I will just get more confused. Thanks very much. — Jim Sigler, manilajim@aol.com</FONT></TD></TR><TR bgcolor="#333333"><TD valign=top><FONT SIZE="2" FACE="arial, helvetica">BrianB</FONT></TD><TD><FONT SIZE="2" FACE="arial, helvetica">Jim, for what you are probably trying to build: <OL TYPE=1><LI>The capacitor voltage doesn't matter, as long as it is at least as big as the circuit voltage.<P><LI>A 2N2222 is a pretty generic NPN transistor. They cost a few cents each, and there are probably a bunch of similar versions that would work just fine. If you want do email me a schematic, I can throw a couple of 2Nxxxx in the mail to you.</OL></FONT></TD></TR><TR bgcolor="#494949"><TD valign=top><FONT SIZE="2" FACE="arial, helvetica">manilajim</FONT></TD><TD><FONT SIZE="2" FACE="arial, helvetica">Thanks for your offer of assistance Brian. I have sent you an email.</FONT></TD></TR></TABLE></td></tr></table>

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