When I got everything working 100% I wasn't using the the input/output caps or bypass caps, so I didn't include them here.
I'll look into a higher rated transistor, I'm kinda limited by what I have in 2 stores near me.
With the 9V 650mA hooked to the Uno and the nte:
The 9v 650mA was loaded just enough to keep the nte and your crt. happy (you got lucky).
You may be right. I ordered a 5V 1A power supply from sparkfun to swap out with this one.
With the 9V 650mA hooked to the nte only or the 12V 7Ah battery to nte:
Nte not happy, too much input voltage to output 5V @ >500mA
The spec sheet rates this regulator at 35V max input voltage and "Output Current in Excess of of 1.0 Ampere".
To get the rated 1Amp from the nte you need:
A heat sink, not much more than 7V on its input and perhaps a small sacrifice to the electron god.
The more voltage you input to the nte the less current it can provide.
Don't need the whole amp, just .7 or so. And would the the 2 extra volts over its minimum operating voltage cause that much of a problem?
I didn't heatsink the regulator because I figured I was operating pretty well under tolerance... didn't notice anything heating up, but maybe it would have under a longer test run.
Thanks for bouncing all these ideas off me guys. So far I'm going to look into a sturdier transistor to solder in this one's place.