Doepfer

Hello,

Does anyone know if I can tap the individual VCA outputs on the 135 VC Mixer? I have two and I'd like to try out the 191 Shepherd Generator, but I don't have 8 VCAs (yet!)

Any info would be much appreciated!

Also, I made a 64 channel Trigger-To-MIDI module using the Doepfer CTM board, a great resource Dieter, thanks! 

pics and details here:

http://loudestwarning.blogspot.com/2009/10/trigger-to-midi-converter-prototype_12.html

and here:

http://loudestwarning.blogspot.com/2009/10/trigger-to-midi-converter-prototype.html

Cheers,
Charlie



      

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

Very nice, lots of possibilities :)



--- In Doepfer_a100@yahoogroups.com, charles kerr <thebadproducer@...> wrote:

>
>
> 
> Also, I made a 64 channel Trigger-To-MIDI module using the Doepfer CTM board, a great resource Dieter, thanks! 
> 
> pics and details here:
> 
> http://loudestwarning.blogspot.com/2009/10/trigger-to-midi-converter-prototype_12.html
> 
> and here:
> 
> http://loudestwarning.blogspot.com/2009/10/trigger-to-midi-converter-prototype.html
> 
> Cheers,
> Charlie
> 
> 
> 
>       
> 
> [Non-text portions of this message have been removed]
>

> Hello,
>
> Does anyone know if I can tap the individual VCA outputs on the
> 135 VC Mixer? I have two and I'd like to try out the 191 Shepherd
> Generator, but I don't have 8 VCAs (yet!)
>
> Any info would be much appreciated!

The A-135 has no individual outputs available because the CEM3381 VCAs used
in the A-135 have current outputs and the outputs are connected together.
One would have to modify the A-135 by adding four operational amplifiers (a
separate operational amplifier for each CEM3381 current output).

Best wishes
Dieter Doepfer

I asked this a few days ago but I'll try again in a different form:

Is there any way I can run a 200 ma module which need 5 volts from a 
doepfer PSU/busboard?

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Richard,
 
Does the module require 200mA of 5V?
 
If yes then I would assume you'll need a separate 5V supply feeding the
Doepfer bus.
 
 
 
David
 
 
 
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________________________________

From: Doepfer_a100@yahoogroups.com [mailto:Doepfer_a100@yahoogroups.com]
On Behalf Of Richard Scott
Sent: 22 March 2010 09:13
To: Doepfer_a100@yahoogroups.com
Subject: [Doepfer_a100] 5 volts


  

I asked this a few days ago but I'll try again in a different form:

Is there any way I can run a 200 ma module which need 5 volts from a 
doepfer PSU/busboard?

-- 
I am using the free version of SPAMfighter.
We are a community of 6 million users fighting spam.
SPAMfighter has removed 1503 of my spam emails to date.
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[Non-text portions of this message have been removed]

> I asked this a few days ago but I'll try again in a different form:
>
> Is there any way I can run a 200 ma module which need 5 volts from a
> doepfer PSU/busboard?

You may use the A-100AD5 but you have to replace the heat sink by a larger
one because the heat sink of the A-100AD5 has been  planned for a max.
current of 100mA. The voltage regulator used on the A-100AD5 (7805, max 1A)
is sufficient provided that the heat sink is large enough. Keep in mind the
the 200mA are taken from +12V, i.e. you must have 200mA surplus of the 12V
output of your power supply.

Best wishes
Dieter Doepfer

Hi

is the 1200 ma PSU a drop in replacement for the 650 ma in a portable 
case or would i have to start drilling holes and shit? (i won't do 
that!). the extra power would be useful.

Richard

> is the 1200 ma PSU a drop in replacement for the 650 ma in a portable
> case or would i have to start drilling holes and shit? (i won't do
> that!). the extra power would be useful.
>
> Richard

The replacement requires no drilling (the positions of the bolts and the
dimensions of boards are the same for both PSUs).

But I have to point out - even if it's boring (especially after the "safety
at work" seminar on Friday):

As these works affects parts, pc boards and cables that conduct mains
voltage (230/115V) carrying out of these works is allowed only for experts
or authorized personnel who are familiar with all valid safety rules. Laymen
are not allowed to carry out these works ! Danger to Life.

Best wishes
Dieter Doepfer