In spite of having my balls busted about this topic (those guys know I’m the sense of humor champion when it comes to good natured ribbing) I am still finding aspects of it that I’m curious about.
Case in point:
@vigilante398 pointed out during the discussion on filtering and ferrite beads that the old adage “garbage in, garbage out” applies here.
That got me thinking (Very dangerous. Can you smell the smoke?): part of my plan for the few small mods I plan to do was a new wall-wart that could deliver 2A instead of the 1A these ship with. Part of the reason was that if we tally the rated full load amperage of the power supply, it exceeds the 1A rating of the wall-wart supplying it by 100 mA.
Now granted, there is safety margin inherently built in because most pedals you’d plug into a 9 vDC/100 mA aren’t actually drawing 100 mA. Yet I plan to modify the 100 mA taps with 300 mA ferrite beads to expand the capability of the taps themselves.
So now I’m rambling.
What I’m driving at is, and I think I’m understanding this correctly, that if we want to address the quality of the input power to the power supply itself, the quality of the wall-wart/inout power would be a good place to do so.
So I’m thinking about the following:
1.) Start with a small enclosure like a 1590a
2.) Use a small step down transformer and rectifier to convert 120 vAC on the primary to 24 vDC on the secondary.
3.) Use the same LM2596 regulator setup on a small board with all design document best practices and output LC filter to provide a nicely regulated 18 vDC on the output.
4.) Feed this output to the power supply ensuring at least 2A available current.
