[sdiy] Re: AC Grounding

[klosmon]

Ah, of course --
it might have been more obvious if the amp came with a schematic;  but it 
just shows as a black box with input & output terminals.

Thanks!

~G

At 10:21 AM 5/20/2005, you wrote:
>My Frostwave analog fx equipent is designed similiarly.
>
>Think of the output of the 18v transformer as a battery, but a battery with
>AC output..
>
>Now if one side is connected to ground, the other side must be forced
>to give 18V AC, relative to ground. (If no side was connected  to ground,
>then the
>two outputs, although each showing 18V ac relative to the other, would be
>varying all over the place relative to ground. (influenced by capacative
>coupling
>inside the transformer, amond other things).
>
>And that 18AC is surely going to a pair of diodes to give raw + and -
>voltages, which in turn are (almost certainly) going to be regulated down to
>+ and - 15v
>rails, as is standard for a lot of analog equipment.
>
>best, paul perry Melbourne Australia (manufacturer of Frostwave analgo fx)