Solid State Guitar Amp Forum | DIY Guitar Amplifiers
Solid State Amplifiers => Amplifier Discussion => Topic started by: mladenu on April 24, 2015, 05:58:58 PM
I apologize if I repeat, but ran into this schematic. My question is whether this is possible and enforceable in practice ...
Even if it might serve as a guitar power amp ... :)
JMFahey last year helped me (if he remembers that :) ) to add current-feedback to classically designed Hitachi mosfet power amp with current resistor, but this with lm317 regulators is new to me...
http://www.current-drive.info/projects/45 (http://www.current-drive.info/projects/45)
Well at first glance it looks plausible, and the write-up looks credible, but the only way of really knowing is to lash it up. I've seen suggestions for using 3-pin regulators as power amps for decades, including at radio frequencies, but I don't think I've actually seen a circuit before.
Most of us would have everything (except the MC34072) in the junk box. Nothing too exotic or expensive; power from a recycled laptop PSU, a couple of recovered CPU coolers, chunk of Vero ...
Personally I'm not a great fan of Class-A, but the high output impedance could suit guitar very well, and I'd be curious to know how it goes. :dbtu: