Having not touched any of this kind of stuff for years I'm looking to power a small TTL test circuit which I intend to built on a breadboard. I wondered if I could run it off USB power. In other words, is it feasible to power a TTL cct via a USB lead and USB socket?
I found a "USB Mini B Breakout Board"
but I'm not sure that the PCB bit of it is necessary and, besides, it's only rated for 100mA (which may be enough but I can't be sure at this stage). If not USB, I guess I should go for a wall wart and a 7805.
So the question is whether there's a good way to power a circuit via USB, or whether you think I should go down the wall-wart or some other route.
Any suggestions?