Yes, it can use whatever power your op-amp needs, provided its not more than 20mA (TLE2426 limitation).
post #16 of 108
12/11/07 at 5:55pm
Is it possible to get a raincheck on the 7 bucks shipped a board price? Because I might get one if I get a new set of headphones for the holidays to replace my currently ductaped ones that just fell apart a few days back. So I might not be able to get in on the 7 dollar special in time :P
Looks like it will be much easier for me to build than a protoboard
Also what parts would I need instead to run it off a 9volt DC external power supply instead of batteries (for use as a "home" amp next to my pc)? I imagine just a 9volt powersupply (we have more than a few of them sitting around) and a proper input jack for it?
For those of you who plan to build a Joshatdot CMoy, I have an alternate parts list that worked well. Here's the thread on the DIY forum that detailed my progress:
CMoy using Joshatdot PCB - Built and Working
The one correction I'd have for that list is that the op-amp I have listed (OPA2228) may not work without custom bypassing (see near the end of the thread). Stick with one of these op-amps:
*recommended for compatibility, 2132 is the more expensive variant