I'd like to build a solid state guitar amp. I am confident in the preamp design, and the power amp schematic (as the power amp was swiped from the AC30VR), but it's the power supply for the power amp that concerns me. As I've read, the power supply is the most important factor in a successful power amp.
I'm happy with lower voltages, and I've built a few tube amps, but I'm not comfortable with designing my own layout that deals with mains wiring, so I'm trying to stay away from that. Thus, this AC wall wart idea was born (/stolen from the internet). To circumvent the issue of having mains inside the box, I thought I'd try to power an LM1875 using a 15VAC 2.5A wall wart using the following schematic:
https://imgur.com/a/bISQ7
The other option is a 24V 2.7A adaptor, but I guess each rail is really only going to have 1A available from the 78xxx and 79xx regulators.
So I guess, at +/- 24V or +/-15, is 1A per rail going to be enough? And what might be a predicted wattage of this set up / would the 3875 run on either of those power configurations with any better results?
Thank you very much
I'm happy with lower voltages, and I've built a few tube amps, but I'm not comfortable with designing my own layout that deals with mains wiring, so I'm trying to stay away from that. Thus, this AC wall wart idea was born (/stolen from the internet). To circumvent the issue of having mains inside the box, I thought I'd try to power an LM1875 using a 15VAC 2.5A wall wart using the following schematic:
https://imgur.com/a/bISQ7
The other option is a 24V 2.7A adaptor, but I guess each rail is really only going to have 1A available from the 78xxx and 79xx regulators.
So I guess, at +/- 24V or +/-15, is 1A per rail going to be enough? And what might be a predicted wattage of this set up / would the 3875 run on either of those power configurations with any better results?
Thank you very much