Doepfer

Hi Simon,

You will need to use the fuse rating that is specified for the 110V 
PSU2 not the 240V PSU2 since you are using a step down transformer 
and the unit is actually operating on 110V. You can safely use a  
slightly higher value than that which is specified but I wouldn't go 
too high. I doubt that you will find 110V rated fuses anywhere in 
Australia though and I don't know that you can substitute the 240V 
rated fuses for the 110V ones. Perhaps Dieter can offer further 
advice here otherwise you might try looking at some of the overseas 
electronics suppliers like digikey to have the 110V rated ones  
shipped to you.

Cheers,
Adam-V


--- In Doepfer_a100@yahoogroups.com, "ilanode" <techmeier@...> wrote:
>
> Hello Simon, we're entering territory where we risk to get lost in 
the
> Doepferian outback... I could be *wrong* however I'd choose the
> correct fuse for the device in question: the PSU2. Since you will 
not
> fuse the mains supply and the transformer likely got his own fuse 
this
> makes sense to me. Regards, Ingo
> 
> 
> --- In Doepfer_a100@yahoogroups.com, "beakanddune" <beakanddune@>
> wrote:
> >
> > Thanks for your help Ingo. I hadn't noticed this info on the FAQ 
page.
> > From this info it seems I should be using a slow blow fuse in the
> > range 630-800mA. But is this correct.....?
> > 
> > ....while I was searching for 800mA fuses (anything other than 
500mA
> > or 1A is very hard to find in Australia), I noticed that that 
fuses
> > are rated for voltage. As I'm in Australia the fuses I'm finding 
are
> > rated at 240VAC. Given that I'm using a step down transformer for 
my
> > 110v PSU2, should I be using an 800mA fuse thats rated at 
110VAC ? 
> > Could the fact that i'm using 500mA 240VAC fuses in a 110V PSU2  
be
> > causing me my problem ?  Sorry for my ignorance on all this :-(
> > 
> > 
> > --- In Doepfer_a100@yahoogroups.com, "ilanode" <techmeier@> wrote:
> > >
> > > Hello Simon, even though you might have damaged one or more 
modules I
> > > don't think this is the reason for the constantly blowing fuses.
> > > 
> > > Assumed by now all modules are connected correctly I suggest to 
try
> > > other fuses: "630 - 700 mA time lag (slow blow)". [That info is 
from
> > > Dopefer's HP -> FAQ.] Make sure they are SLOW BLOW/TIME LAG!
> > > 
> > > Hope that helps, Ingo
> > > 
> > > --- In Doepfer_a100@yahoogroups.com, "beakanddune" 
<beakanddune@>
> > > wrote:
> > > >
> > > > Hi People,
> > > > 
> > > > I know that the topic of fuses has appeared a few times and 
others
> > > > have experienced similar problems but I'm not sure what to do 
about
> > > > this. Sorry about the long winded nature of the post but I 
don't
> want
> > > > to leave out any prudent info (including details of my own
> stupidity).
> > > > 
> > > > I have an A-100P with a 110v PSU2. I'm in Australia so I'm 
using a
> > > > stepdown transformer that has a 250 VA rating. The A-100P is
> half full
> > > > and has been operating for the last month or so without a 
problem. I
> > > > recently added an A-118 (Noise) and an A-131 (VCA) and had no
> > problems. 
> > > > 
> > > > The other day I removed a few modules in order to fit the 
spring
> from
> > > > my  A-199 and when putting the modules back in I accidentally
> plugged
> > > > my A-112 in incorrectly (I plugged the cable into the bus 
board
> > > > without plugging it into the left hand row of pins). When I 
powered
> > > > the unit on the lights came on momentarily and then no power. 
I then
> > > > realied my error and corrected it but it seems that the fuse 
in my
> > > > case had also blown. I replaced this with a 500mA time lag 
fuse and
> > > > this worked fine. 
> > > > 
> > > > Since then when I power the case on the fuse blows 80% of the
> time and
> > > > I've just run out of 500mA fuses.  :-(   Note that 1A fuses 
seem to
> > > > work fine but I'm aware that these are not recommended.
> > > > 
> > > > I'm not sure whether this problem is being caused by :
> > > > 
> > > > a. A now 'damaged' A-112 (still seems to work ok).
> > > > b. A damaged PSU2.
> > > > c. Unsuitable fuses.
> > > > d. Some other factor.
> > > > 
> > > > Could anyone tell me whether I've likely broken anything and 
if
> there
> > > > is anything that could be causing the fuses to blow ?  
> > > > 
> > > > Thanks in advance
> > > > 
> > > > Simon
> > > >
> > >
> >
>