Has any one used a LM (like a LM317t .. i have a bunch of them) regulator with a NPN pass transistor , rather than use a tl431 and a PNP pass transistor ... ?? Mike KC7NOA _________________________________________________________________ Your E-mail and More On-the-Go. Get Windows Live Hotmail Free. http://clk.atdmt.com/GBL/go/201469229/direct/01/