Depends is the answer as always. Those will do something but surely there
have to be capacitors across each supply half?
I'm assuming that the 0v is in fact earth for the circuit. The only time I
saw capacitors in the manner you suggest was when the full supply was used
as it is as a separate supply to another circuit. One then has to be very
careful with your earth!
Small caps across split rails are common to stop RF pick up though, that is
all I have seen. What exactly is this circuit doing? Normally if its audio
bespoke chips can be used that do not in themselves need split supplies.
Brian

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"Dave Plowman (News)" wrote in message
...
An audio circuit I found online and have been playing with has an odd
design (to me).

It's op-amp based running off a (separate) +/-15v supply.

There are on board caps across the supply, which is common enough. 10 and
0.1uF in parallel. But instead of going to ground, they are wired across
the +/-15v. Does that do the job as well? Or serves a different purpose?

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