I'm planning to build two pedals in one enclosure, and have a question about simplifying the power decoupling.
This is going to be a dual-Timmy, but I don't think the specific circuit makes much difference for my question; it's a dual-opamp overdrive.
The Timmy power supply is something like this:
V+ (9V) goes to the dual opamp; Vref (~4.95V) is used elsewhere in the circuit.
I want to add the 100-ohm + 220uF filtering as described by bajaman here: http://www.freestompboxes.org/viewtopic.php?f=49&t=1392
I know I could add that completely separate from the Timmy boards, but since I'm making the layout anyway, could I simplify it by putting the filtering after/within the power supply section, like this?
This is using the existing 47uF cap (x2) instead of the 220uF -- is that enough? Should I replace the 47uF with 220uF?
This filters the ~4.95V supply, and doesn't require me to duplicate the whole power supply section for each circuit. I'm hoping the opamps themselves don't really need the decoupling/isolation -- but I could be dead wrong. Anyone know?