In SX Microcontrollers, SX/B Compiler and SX-Key Tool, eagletalontim wrote: oh...... isn't the TIP120 a NPN meaning I can only provide a ground to the circuit? I need to be able to control the source voltage. ---------- End of Message ---------- You can view the post on-line at: http://forums.parallax.com/forums/default.aspx?f=7&p=1&m=316942#m316957 Need assistance? Send an email to the Forum Administrator at forumadmin@parallax.com The Parallax Forums are powered by dotNetBB Forums, copyright 2002-2009 (http://www.dotNetBB.com)