Rick, has the variable transformer progressed past the conceptual stage?
I'm pretty excited about it but if its not going to happen I'll have to make one myself.
Is this something I could splice in myself using a rheostat? What values would I need?
EDIT: Thinking more about this, I'd have to lower the resistance of the transformer itself to get to 10v -- which isn't something easy to do.
Would this car adapter work? Specs seem fine but I'm not sure if it has the right connector...
http://www.radioshack.com/product/index.jsp?productId=3802146&tab=summary