Doepfer

Is there a reasonable way to have a 6u suitcase frame work with both 230 and 115 volts? IE, I want to be able to play it in Europe and the States.

From checking the previous discussions, I understand that a switching power supply has been tested and proven problematic. But is there an actual solution? Could two separate power supply units be installed in the suitcase, for example? Or an external power supply? One installed for 230V and another external?

I am based in Europe, so most of the time I'll need 230V.
Step up transformers tend to be not very portable...

Vesa

Hi Vesa,

 

If all you’re running is a suitcase you should be fine with a small step-up
converter. They’re no larger than a normal power supply. Something like this
perhaps?

 

http://www.amazon.com/50W-WATT-STEP-VOLTAGE-CONVERTER/dp/B000IMM26U/ref=sr_1
_8?ie=UTF8
<http://www.amazon.com/50W-WATT-STEP-VOLTAGE-CONVERTER/dp/B000IMM26U/ref=sr_
1_8?ie=UTF8&qid=1300454205&sr=8-8> &qid=1300454205&sr=8-8

 

York

 

  _____  

Von: Doepfer_a100@yahoogroups.com [mailto:Doepfer_a100@yahoogroups.com] Im
Auftrag von Vesa Vehvilainen
Gesendet: Freitag, 18. März 2011 09:08
An: doepfer_a100@yahoogroups.com
Betreff: [Doepfer_a100] 230/115V?

 

  

Is there a reasonable way to have a 6u suitcase frame work with both 230 and
115 volts? IE, I want to be able to play it in Europe and the States.

From checking the previous discussions, I understand that a switching power
supply has been tested and proven problematic. But is there an actual
solution? Could two separate power supply units be installed in the
suitcase, for example? Or an external power supply? One installed for 230V
and another external?

I am based in Europe, so most of the time I'll need 230V.
Step up transformers tend to be not very portable...

Vesa





[Non-text portions of this message have been removed]

Hi,
Damn, yes, this looks smaller and more practical than the ones I've used so far
(Like this: http://www.amazon.com/Power-Bright-VC2000W-Voltage-Transformer/dp/B000MXW85A  ...) :)
And certainly easier than modifying the suitcase.

Thanks!
Vesa




On Mar 18, 2011, at 15:17, York Luethje wrote:

> Hi Vesa,
> 
> If all you�re running is a suitcase you should be fine with a small step-up
> converter. They�re no larger than a normal power supply. Something like this
> perhaps?
> 
> http://www.amazon.com/50W-WATT-STEP-VOLTAGE-CONVERTER/dp/B000IMM26U/ref=sr_1
> _8?ie=UTF8
> <http://www.amazon.com/50W-WATT-STEP-VOLTAGE-CONVERTER/dp/B000IMM26U/ref=sr_
> 1_8?ie=UTF8&qid=1300454205&sr=8-8> &qid=1300454205&sr=8-8
> 
> York
> 
> _____ 
> 
> Von: Doepfer_a100@yahoogroups.com [mailto:Doepfer_a100@yahoogroups.com] Im
> Auftrag von Vesa Vehvilainen
> Gesendet: Freitag, 18. M�rz 2011 09:08
> An: doepfer_a100@yahoogroups.com
> Betreff: [Doepfer_a100] 230/115V?
> 
> Is there a reasonable way to have a 6u suitcase frame work with both 230 and
> 115 volts? IE, I want to be able to play it in Europe and the States.
> 
> From checking the previous discussions, I understand that a switching power
> supply has been tested and proven problematic. But is there an actual
> solution? Could two separate power supply units be installed in the
> suitcase, for example? Or an external power supply? One installed for 230V
> and another external?
> 
> I am based in Europe, so most of the time I'll need 230V.
> Step up transformers tend to be not very portable...
> 
> Vesa
> 
> [Non-text portions of this message have been removed]
> 
> 




[Non-text portions of this message have been removed]

Easy, get a (build) a power supply that uses a transformer with  dual
primary windings (2 x 115VAC) and a suitable mains selector switch which
simply puts the windings in parallel or series. This is how it used to be
done in the old days and being linear is 

Best Regards
Laurie Biddulph
Mobile: 0400 257 645
Web: www.elby-designs.com

-----Original Message-----
From: Doepfer_a100@yahoogroups.com [mailto:Doepfer_a100@yahoogroups.com] On
Behalf Of Vesa Vehvilainen
Sent: Saturday, 19 March 2011 12:08 AM
To: doepfer_a100@yahoogroups.com
Subject: [Doepfer_a100] 230/115V?

Is there a reasonable way to have a 6u suitcase frame work with both 230 and
115 volts? IE, I want to be able to play it in Europe and the States.

From checking the previous discussions, I understand that a switching power
supply has been tested and proven problematic. But is there an actual
solution? Could two separate power supply units be installed in the
suitcase, for example? Or an external power supply? One installed for 230V
and another external?

I am based in Europe, so most of the time I'll need 230V.
Step up transformers tend to be not very portable...

Vesa




------------------------------------

Yahoo! Groups Links

Hi Laurie

> Easy, get a (build) a power supply that uses a transformer with  dual
> primary windings (2 x 115VAC) and a suitable mains selector switch which
> simply puts the windings in parallel or series. 

It is not necessary to build a new one:
http://www.doepfer.de/faq/a100_faq.htm#Modification%20mains%20voltage
Nevertheless this should be done definitely only by knowledged experts 
and or authorizied technicians.

Florian

Hi,

The question was "can I have a power supply that works on 2 voltages"

"Is there a reasonable way to have a 6u suitcase frame work with both 230
and 115
volts? IE, I want to be able to play it in Europe and the States.

From checking the previous discussions, I understand that a switching power
supply has been tested and proven problematic. But is there an actual
solution?
Could two separate power supply units be installed in the suitcase, for
example?
Or an external power supply? One installed for 230V and another external?

I am based in Europe, so most of the time I'll need 230V.
Step up transformers tend to be not very portable..."

There is nothing there to say they have a Doepfer power supply.

My answer states that for it to work, the power supply must have a
transformer with dual primary windings and have a proper `mains selector'
switch fitted so that they can select between the 2 voltages.

The modification on the Doepfer pages is a fixed modification and would have
to be done each time you change country! A switch is a much neater solution.
Obviously, if you have a Doepfer supply, then using the modification as a
guide you would wire a switch in place of the `shorts'.. If you don't have a
Doepfer supply then you need to make sure that you follow the original
answer  if you do it yourself then yes you MUST follow ALL the safety
standards.

I still think my answer was correct but thanks for the feedback anyway :)


Best Regards
Laurie Biddulph
Mobile: 0400 257 645
Web: www.elby-designs.com

-----Original Message-----
From: Doepfer_a100@yahoogroups.com [mailto:Doepfer_a100@yahoogroups.com] On
Behalf Of Florian Anwander
Sent: Monday, 21 March 2011 10:41 PM
To: Doepfer_a100@yahoogroups.com
Subject: Re: [Doepfer_a100] 230/115V?

Hi Laurie

> Easy, get a (build) a power supply that uses a transformer with  dual
> primary windings (2 x 115VAC) and a suitable mains selector switch which
> simply puts the windings in parallel or series. 

It is not necessary to build a new one:
http://www.doepfer.de/faq/a100_faq.htm#Modification%20mains%20voltage
Nevertheless this should be done definitely only by knowledged experts 
and or authorizied technicians.

Florian


------------------------------------

Yahoo! Groups Links

Hi Laury,


> The modification on the Doepfer pages is a fixed modification and would ...
I know that. But I think the hint here in this mail list should be only: 
"Go look at this URL. If you are a skilled person you will understand 
the technical details and will find the solution on your own. If you are 
not a skilled person, then you will not understand, which is the sign 
that you should keep your hands off".

I do not think that it is a good idea to explain modifications in detail 
here on the list, which may kill the modifying person or even other 
people. Vesa may be a person who is able to do this: but we cannot 
control, whether someone else is reading this in the archive, who is not 
able to achieve this mod safely.

Florian

> Hi Laury,
>
>
> > The modification on the Doepfer pages is a fixed modification
> and would ...
> I know that. But I think the hint here in this mail list should be only:
> "Go look at this URL. If you are a skilled person you will understand
> the technical details and will find the solution on your own. If you are
> not a skilled person, then you will not understand, which is the sign
> that you should keep your hands off".
>
> I do not think that it is a good idea to explain modifications in detail
> here on the list, which may kill the modifying person or even other
> people. Vesa may be a person who is able to do this: but we cannot
> control, whether someone else is reading this in the archive, who is not
> able to achieve this mod safely.
>
> Florian

Florian,

I fully agree. Sometimes customers become angry if I mention that. But they
do not understand that it's because of their own health if I do not want to
explain details that relate to perilous voltages.

Best wishes
Dieter Doepfer