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Originally Posted by Richard
Thanks for referencing the IFI white paper on powering the controller. [I think you mean this circuit which uses an LM317T regulator?]
Actually, as written for 2006, <R51> would stop you from pulling a tap off of the backup battery supply. |
I would not use that circuit to power a 7.2 volt Vex controller. You'd be far better off using the standard LM317T power circuit (
like this), since the quoted circuit is designed to
charge a 7.2 volt battery, not replace it. All of the parts are available from Radio Shack, or Jameco, DigiKey, Mouser, etc. You definitely need a
heat sink, and it should be powered from a 12 volt tap off the fuse panel.
This is a good circuit to play with in the off season. The LM-317T is a very versatile circuit and everyone would be well-served to gain some familiarity with it - including it's disadvantages (such as heat generated and relative inefficiency with high voltage drops).
Don