So I am building a project with a CMOY headphone amplifier with a DS1802 Digital pot for volume control and CD4052 mux for source selection.
For power I am using a AC-AC wallwart with rectifier and voltage regulator.
Now the Cmoy uses a resistive voltage divider to achieve its dual supply rails (in my case i have +/- 8V). All of this works perfectly fine and sounds great.
The problem occurs when I attempt to power a microcontroller from the +8V (Right now I'm prototyping using an arduino uno). As expected the load from the uC is much larger than anything else and the supply rails become very unbalanced (from +8 to like +3-4V).
So I need a bit of help fixing this error as cheaply as possible as well as conserving some board space. I've read tangent's article on virtual grounds but am still at a bit of a loss.
Thanks for any help, if you need a schematic I can try and draw one up.
For power I am using a AC-AC wallwart with rectifier and voltage regulator.
Now the Cmoy uses a resistive voltage divider to achieve its dual supply rails (in my case i have +/- 8V). All of this works perfectly fine and sounds great.
The problem occurs when I attempt to power a microcontroller from the +8V (Right now I'm prototyping using an arduino uno). As expected the load from the uC is much larger than anything else and the supply rails become very unbalanced (from +8 to like +3-4V).
So I need a bit of help fixing this error as cheaply as possible as well as conserving some board space. I've read tangent's article on virtual grounds but am still at a bit of a loss.
Thanks for any help, if you need a schematic I can try and draw one up.