Re: DIY 5X9v bat phantom supply

[Mike Feldman <>]

Rob Danielson wrote:

> ... Do you happen to know if all of the bats need
> to be in the same metal case with the other components?

Since the batts are just DC, I'd think that they could
be in an external package with standard (or non-standard)
power plug.  You might want to put a ferrite bead or
choke on the incoming DC lines to keep any stray RF out.

And if you're using caps to isolate the resistor pairs I'd
think they'd want to go inside the shield/case with the XLRs.

The phantom box that I made used poly caps for DC blocking
in the signal path to the output cable.  If I could lay
hands on it, I'd shoot some pictures, but it was pretty
crude.

-- Mike



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