You got it - half the voltage needs double the current for the same
power consumption: Watts = Volts X Amps.

Replace them with fuses with double the amp rating of what you have
now, and you'll be in business.

Joe

--- In Doepfer_a100@yahoogroups.com , "Tim Stinchcombe" <timothy@t...>
wrote:

> > Best to contact the distributer, who has probably answered this
> > question many times. Here in the U.S. Enport told me that all of
> the
> > frames shipped here from Doepfer contain fuses sized for the 220V
> P/S,
> > even though the frames have a 110V P/S, which is why the fuses
> always
> > blow.
>
> After what I've just read on the web, I'll definitely second that!
> When I first read the above I have to admit to being a little
> sceptical - several of the books I have point out that fuses and
> their ratings are a very misunderstood subject, but then they don't
> really give the whole story. I thought it was a power thing, but in
> fact it is a current thing - hence on the basis the psu takes the
> same power whether running off 240V or 110V, in the US/Canada, half
> the voltage implies *double* the current, so what Joe says above
> sounds very feasible. After searching the web (it's
> called 'fuseology', what a yeuchy term!) I came across this:
>
> http://www.littelfuse.com/PDFs/EDG_Cat/Fuseology.pdf
>
> Take a gander if you want to be convinced by the complexity of it!
>
> I'm thus a little surprised that Doepfer ship units to North America
> with the same fuse rating as Europe when it looks like it could be a
> little marginal - it would be nice to hear Dieter's take on it.
>
> In any case, it sounds like Dan has his system running OK, at least
> in the short term.
>
> Tim