jeremy youngs wrote:
> yes jon i just checked my math and 120x1.414 is 169 ?????
> where was my head at when i was calculating that last month
> :(
> thats kinda sad b/c it seems large transformers are always necessary , and
> the cores seem to be the problem to get if one wants to roll their own.
> hey you could always design for 180 volt no??? ( wink wink )  :))
>   
Well, I get fidgety when people want to hook my amps directly to the line.
If something goes wrong, there would be HUGE explosions and the
amp would be reduced to smoldering rubble.  Of course, this can happen
with an isolated supply, as well, but other than the guy who took the
insulating heat conductors out of my amps, that pretty much has never
happened.  The transformers don't have to be real large, and the "step-down"
transformers used on gear that ran off 480 V can be reset to give you
60 V AC for 84 V DC.  That may be enough.  otherwise, you can set
up a 1:1 isolation transformer with a buck transformer to get most
any voltage you want.  The buck transformer can be much smaller
than the isolation transformer.
> also on the way back to mo to happen in the next 60 days do you have a
> store front or let random internet strangers poke around ???
>   
Pico Systems is basically my home basement!  If you wanted to drop by 
and see
my shop and talk about CNC stuff, I'd be glad to see you.

Jon

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