In SX Microcontrollers, SX/B Compiler and SX-Key Tool, George Frame wrote: Bennettdan, For the ignition drivers they use a IGBT with an internal diode to handle the voltage spikes. I was just looking in the Digi-Key catalog and they have some manufactured by International Rectifier in a TO220 case for around $3.50 each. ---------- End of Message ---------- You can view the post on-line at: http://forums.parallax.com/forums/default.aspx?f=7&p=3&m=192262#m194068 Need assistance? Send an email to the Forum Administrator at forumadmin@parallax.com The Parallax Forums are powered by dotNetBB Forums, copyright 2002-2007 (http://www.dotNetBB.com)