Doepfer

Hi,
I am a new user from Montreal, Canada.
The fuse that came with my A-100 blowed and it was a 0.1 Ma.
I replaced it with another 0,1 and it  blowed again and again.
Now I have put a 0.5 and it seems fine but I don't want to blow 
somethingelse.
Anybody with a clue
Thanks
Dan

Hi Dan,

We've had this discussion in the past, and there seems to be a 
difference in opinion as to what type of fuse to use. In mine (I'm UK 
based) the fuses are marked 'T100mA', which makes them 'time lag' 
(or 'slo-blo') fuses. The point of them being time-lag is to ensure 
that they don't blow at the moment of turn on, when an inevitable 
surge in current occurs. If the replacements you used were not 'T' 
types, then this may be why they blew immediately. On the other hand, 
you may of course actually have a problem somewhere with something 
drawing too much current! However, other list members have suggested 
using fast blow types as an added precaution. Probably best to 
contact your local distributor; but come to think about it, perhaps 
if Dieter is listening in, he can put us straight once and for all?!

Tim


--- In Doepfer_a100@yahoogroups.com, "danielthouin" 
<danielthouin@h...> wrote:

> Hi,
> I am a new user from Montreal, Canada.
> The fuse that came with my A-100 blowed and it was a 0.1 Ma.
> I replaced it with another 0,1 and it  blowed again and again.
> Now I have put a 0.5 and it seems fine but I don't want to blow 
> somethingelse.
> Anybody with a clue
> Thanks
> Dan

hi tim,
it's better for dan to contact his doepfer dealers or
roland mayer,as dieter is away from the office until
22 of april.
bakis.


--- Tim Stinchcombe
<timothy@tstinchcombe.freeserve.co.uk> wrote:
> Hi Dan,
> 
> We've had this discussion in the past, and there
> seems to be a 
> difference in opinion as to what type of fuse to
> use. In mine (I'm UK 
> based) the fuses are marked 'T100mA', which makes
> them 'time lag' 
> (or 'slo-blo') fuses. The point of them being
> time-lag is to ensure 
> that they don't blow at the moment of turn on, when
> an inevitable 
> surge in current occurs. If the replacements you
> used were not 'T' 
> types, then this may be why they blew immediately.
> On the other hand, 
> you may of course actually have a problem somewhere
> with something 
> drawing too much current! However, other list
> members have suggested 
> using fast blow types as an added precaution.
> Probably best to 
> contact your local distributor; but come to think
> about it, perhaps 
> if Dieter is listening in, he can put us straight
> once and for all?!
> 
> Tim
> 
> 
> --- In Doepfer_a100@yahoogroups.com, "danielthouin" 
> <danielthouin@h...> wrote:
> > Hi,
> > I am a new user from Montreal, Canada.
> > The fuse that came with my A-100 blowed and it was
> a 0.1 Ma.
> > I replaced it with another 0,1 and it  blowed
> again and again.
> > Now I have put a 0.5 and it seems fine but I don't
> want to blow 
> > somethingelse.
> > Anybody with a clue
> > Thanks
> > Dan
> 
> 


=====
synthfreak(parallel worlds)
athens-greece
[Doepfer_a100] group owner

__________________________________________________
Do you Yahoo!?
The New Yahoo! Search - Faster. Easier. Bingo
http://search.yahoo.com

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.

Joe

 --- In Doepfer_a100@yahoogroups.com, Bakis Sirros 
<synth_freak_2000@y...> wrote:

> hi tim,
> it's better for dan to contact his doepfer dealers or
> roland mayer,as dieter is away from the office until
> 22 of april.
> bakis.
> 
> 
> --- Tim Stinchcombe
> <timothy@t...> wrote:
> > Hi Dan,
> > 
> > We've had this discussion in the past, and there
> > seems to be a 
> > difference in opinion as to what type of fuse to
> > use. In mine (I'm UK 
> > based) the fuses are marked 'T100mA', which makes
> > them 'time lag' 
> > (or 'slo-blo') fuses. The point of them being
> > time-lag is to ensure 
> > that they don't blow at the moment of turn on, when
> > an inevitable 
> > surge in current occurs. If the replacements you
> > used were not 'T' 
> > types, then this may be why they blew immediately.
> > On the other hand, 
> > you may of course actually have a problem somewhere
> > with something 
> > drawing too much current! However, other list
> > members have suggested 
> > using fast blow types as an added precaution.
> > Probably best to 
> > contact your local distributor; but come to think
> > about it, perhaps 
> > if Dieter is listening in, he can put us straight
> > once and for all?!
> > 
> > Tim
> > 
> > 
> > --- In Doepfer_a100@yahoogroups.com, "danielthouin" 
> > <danielthouin@h...> wrote:
> > > Hi,
> > > I am a new user from Montreal, Canada.
> > > The fuse that came with my A-100 blowed and it was
> > a 0.1 Ma.
> > > I replaced it with another 0,1 and it  blowed
> > again and again.
> > > Now I have put a 0.5 and it seems fine but I don't
> > want to blow 
> > > somethingelse.
> > > Anybody with a clue
> > > Thanks
> > > Dan
> > 
> > 
> 
> 
> =====
> synthfreak(parallel worlds)
> athens-greece
> [Doepfer_a100] group owner
> 
> __________________________________________________
> Do you Yahoo!?
> The New Yahoo! Search - Faster. Easier. Bingo
> http://search.yahoo.com

> 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

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