Anyone who wandered into this thread by accident, start here:Amb's M³ PageMorsel's M³ Page
So, any reason those of us who want to put off dealing with the power supply issue for now can't just use a series of two lead acid batteries? RadioShack sells tiny ones, my barbeque pit computer uses a "lawn & garden" battery, sort of a 1/3 size car battery.
Wouldn't this sound better than all but the best regulated supplies? Or is there a current issue?
I'd have to check, a fully charged pair might exceed 27 volts. That's an issue with many op amps, as amb notes.
(There is a spectrum for lead acid batteries. Car batteries put out amazing amounts of current briefly to start the engine, but don't like repeatedly being fully drained. Marine batteries are in between, golf cart batteries are the other extreme, like to be taken fully down and back up hundreds of times. Has to do with internal distance between plates. My dad uses golf cart batteries for his solar panels on his summer cabin.)