Doepfer

would it be possible (and not too complicated) to turn this into a +/- 
15 v psu ? 

cheers

OLLIE

Blacet offers a 15v twin rail power supply that costs
about the same as it would to build your own from
scratch. It's a bargain and a safer option than
retrofitting a Doepfer supply (IMO).


--- synth_ollie <synth.ollie@gmail.com> wrote:

> would it be possible (and not too complicated) to
> turn this into a +/- 
> 15 v psu ? 
> 
> cheers
> 
> OLLIE
> 
> 
> 
> 


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yep, but blacet are in the states and Im in sweden
(add 25% vat), and I may be able to get the doepfer cheapo,

anyone else....?


--- In Doepfer_a100@yahoogroups.com, neil jendon <n2eil@...> wrote:

>
> Blacet offers a 15v twin rail power supply that costs
> about the same as it would to build your own from
> scratch. It's a bargain and a safer option than
> retrofitting a Doepfer supply (IMO).

Ah, understood. I don't know if the mains transformer
on the doepfer power supply provides enough AC volts
to produce 15 vdc after rectification and regulation.

I'm sure if you dig around on the WWW, you'll find an
electronics supplier in Sweden who sells a dual rail
linear power supply that will fit your needs. Power
One is a big brand here (they're imported from SE
Asia, IIRC.) Also, look to see if you can find a used
bench supply at a university rummage sale; big and
bulky but rock solid.

Speaking of things and such, has anyone tried a
switching supply to power a synth or modules? They
don't have the best reputation in audio circles, but
there are some PA amps and guitar amps using them.
Cheaper and lighter.

--- synth_ollie <synth.ollie@gmail.com> wrote:

> yep, but blacet are in the states and Im in sweden
> (add 25% vat), and I may be able to get the doepfer
> cheapo,
> 
> anyone else....?
> 
> 
> --- In Doepfer_a100@yahoogroups.com, neil jendon
> <n2eil@...> wrote:
> >
> > Blacet offers a 15v twin rail power supply that
> costs
> > about the same as it would to build your own from
> > scratch. It's a bargain and a safer option than
> > retrofitting a Doepfer supply (IMO).
> 
> 


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well, I guess you´re right, nevet thought of that...

thanks ! 

OLLIE



--- In Doepfer_a100@yahoogroups.com, neil jendon <n2eil@...> wrote:

> I don't know if the mains transformer
> on the doepfer power supply provides enough AC volts
> to produce 15 vdc after rectification and regulation.

> would it be possible (and not too complicated) to turn this into a +/- 15
v psu ?

The main problem is that you will need another transformer (~ 2x18V instead
of 2x15V) as there is not sufficient "headroom" for a perfect 15V supply
(i.e. without ripple noise). And two resistors have to be changed which
define the output voltage range of the trimming potentiometers.

Best wishes
Dieter Doepfer