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2008-07-26 by clusters_movie
I need a cv source -12 + 12 volts to control a filtered coffé of analogue solution and doepfer synth. Doepfer is controlled by cv source -5 +5 volts; anyone know some modules like paia or banana logue. I think i can use Kenton prosolo mkII but i need only cv source not midi cv converter, any similar of A176 control voltage source but with 12volts output or little less. Thank Robert
2008-07-26 by Monroe Eskew
The A133 VC polarizer will multiply a signal by up to +/- 2.5, so running a CV through there should do the trick. Monroe On Jul 26, 2008, at 1:30 PM, clusters_movie wrote: > I need a cv source -12 + 12 volts to control a filtered coffé of > analogue solution and doepfer synth. Doepfer is controlled by cv > source -5 +5 volts; anyone know some modules like paia or banana > logue. > I think i can use Kenton prosolo mkII but i need only cv source not > midi cv converter, any similar of A176 control voltage source but with > 12volts output or little less. Thank Robert > > > [Non-text portions of this message have been removed]
2008-07-26 by robert wholeshorn
The A133 running with with +/- 2,5 volts, I need +/-12 volts: filtered coffeé running with CV +/- 12 volts Robert
--- Sab 26/7/08, Monroe Eskew <monroe.eskew@gmail.com> ha scritto:
Da: Monroe Eskew <monroe.eskew@gmail.com>
Oggetto: Re: [Doepfer_a100] cv source -12 +12 volt
A: Doepfer_a100@yahoogroups.com
Data: Sabato 26 luglio 2008, 21:46
The A133 VC polarizer will multiply a signal by up to +/- 2.5, so
running a CV through there should do the trick.
Monroe
On Jul 26, 2008, at 1:30 PM, clusters_movie wrote:
> I need a cv source -12 + 12 volts to control a filtered coffé of
> analogue solution and doepfer synth. Doepfer is controlled by cv
> source -5 +5 volts; anyone know some modules like paia or banana
> logue.
> I think i can use Kenton prosolo mkII but i need only cv source not
> midi cv converter, any similar of A176 control voltage source but with
> 12volts output or little less. Thank Robert
>
>
>
[Non-text portions of this message have been removed]
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[Non-text portions of this message have been removed]2008-07-27 by Monroe Eskew
No, it multiplies the amplitude of the signal by a factor of up to 2.5, meaning 5 volts input results in 12.5 volts output. On Jul 26, 2008, at 2:52 PM, robert wholeshorn wrote: > The A133 running with with +/- 2,5 volts, I need +/-12 volts: > filtered coffeé running with CV +/- 12 volts Robert > > --- Sab 26/7/08, Monroe Eskew <monroe.eskew@gmail.com> ha scritto: > > Da: Monroe Eskew <monroe.eskew@gmail.com> > Oggetto: Re: [Doepfer_a100] cv source -12 +12 volt > A: Doepfer_a100@yahoogroups.com > Data: Sabato 26 luglio 2008, 21:46 > > The A133 VC polarizer will multiply a signal by up to +/- 2.5, so > running a CV through there should do the trick. > > Monroe > > On Jul 26, 2008, at 1:30 PM, clusters_movie wrote: > > > I need a cv source -12 + 12 volts to control a filtered coffé of > > analogue solution and doepfer synth. Doepfer is controlled by cv > > source -5 +5 volts; anyone know some modules like paia or banana > > logue. > > I think i can use Kenton prosolo mkII but i need only cv source not > > midi cv converter, any similar of A176 control voltage source but > with > > 12volts output or little less. Thank Robert > > > > > > > > [Non-text portions of this message have been removed] > > Posta, news, sport, oroscopo: tutto in una sola pagina. > Crea l'home page che piace a te! > www.yahoo.it/latuapagina > > [Non-text portions of this message have been removed] > > > [Non-text portions of this message have been removed]
2008-07-27 by robert wholeshorn
AH! That's really good! Wich kind of problems can have some doepfer modules than works with +/-5volts?
--- Dom 27/7/08, Monroe Eskew <monroe.eskew@gmail.com> ha scritto:
Da: Monroe Eskew <monroe.eskew@gmail.com>
Oggetto: Re: [Doepfer_a100] cv source -12 +12 volt
A: Doepfer_a100@yahoogroups.com
Data: Domenica 27 luglio 2008, 02:25
No, it multiplies the amplitude of the signal by a factor of up to
2.5, meaning 5 volts input results in 12.5 volts output.
On Jul 26, 2008, at 2:52 PM, robert wholeshorn wrote:
> The A133 running with with +/- 2,5 volts, I need +/-12 volts:
> filtered coffeé running with CV +/- 12 volts Robert
>
> --- Sab 26/7/08, Monroe Eskew <monroe.eskew@ gmail.com> ha scritto:
>
> Da: Monroe Eskew <monroe.eskew@ gmail.com>
> Oggetto: Re: [Doepfer_a100] cv source -12 +12 volt
> A: Doepfer_a100@ yahoogroups. com
> Data: Sabato 26 luglio 2008, 21:46
>
> The A133 VC polarizer will multiply a signal by up to +/- 2.5, so
> running a CV through there should do the trick.
>
> Monroe
>
> On Jul 26, 2008, at 1:30 PM, clusters_movie wrote:
>
> > I need a cv source -12 + 12 volts to control a filtered coffé of
> > analogue solution and doepfer synth. Doepfer is controlled by cv
> > source -5 +5 volts; anyone know some modules like paia or banana
> > logue.
> > I think i can use Kenton prosolo mkII but i need only cv source not
> > midi cv converter, any similar of A176 control voltage source but
> with
> > 12volts output or little less. Thank Robert
> >
> >
> >
>
> [Non-text portions of this message have been removed]
>
> Posta, news, sport, oroscopo: tutto in una sola pagina.
> Crea l'home page che piace a te!
> www.yahoo.it/ latuapagina
>
> [Non-text portions of this message have been removed]
>
>
>
[Non-text portions of this message have been removed]
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[Non-text portions of this message have been removed]2008-07-28 by Florian Anwander
Hi Robert, > AH! That's really good! Wich kind of problems can have some doepfer modules than works with +/-5volts? The CVs will clip. Everything above +5 Volt / below -5 Volt may have no impact. Florian
2008-07-28 by hardware@doepfer.de
> I need a cv source -12 + 12 volts to control a filtered coffé of > analogue solution and doepfer synth. Doepfer is controlled by cv > source -5 +5 volts; anyone know some modules like paia or banana logue. > I think i can use Kenton prosolo mkII but i need only cv source not > midi cv converter, any similar of A176 control voltage source but with > 12volts output or little less. Thank Robert If you increase the value of the three feedback resistors R4, R9 and R13 from 47k to 100k you obtain ~ 0...+11.5V (+12V are not possible because the maximal output voltage of the operational amplifiers is a bit below the supply voltage (+12V). If you disconnect the terminal of the potentiometer at the front panel that is connected to GND and wire it to +12V you obtain ~ -11.5....+11.5V. But a totally simple solution is to connect a potentiometer (typ. 50K...100k linear) between -12V and + 12V and use it's center terminal as CV source. In this case you obtain -12V...+12V. Best wishes Dieter Doepfer
2008-07-29 by robert wholeshorn
I am completely ignorant about component of singles modules of system A 100. I use intuition and poor memory of school to understand.______In wich kind of modules i can find potentiometer 50k....100k? How i can connect it? Thank Robert
--- Lun 28/7/08, hardware@doepfer.de <hardware@doepfer.de> ha scritto:
Da: hardware@doepfer.de <hardware@doepfer.de>
Oggetto: AW: [Doepfer_a100] cv source -12 +12 volt
A: Doepfer_a100@yahoogroups.com
Data: Lunedì 28 luglio 2008, 10:40
> I need a cv source -12 + 12 volts to control a filtered coffé of
> analogue solution and doepfer synth. Doepfer is controlled by cv
> source -5 +5 volts; anyone know some modules like paia or banana logue.
> I think i can use Kenton prosolo mkII but i need only cv source not
> midi cv converter, any similar of A176 control voltage source but with
> 12volts output or little less. Thank Robert
If you increase the value of the three feedback resistors R4, R9 and R13
from 47k to 100k you obtain ~ 0...+11.5V (+12V are not possible because the
maximal output voltage of the operational amplifiers is a bit below the
supply voltage (+12V).
If you disconnect the terminal of the potentiometer at the front panel that
is connected to GND and wire it to +12V you obtain ~ -11.5....+11. 5V.
But a totally simple solution is to connect a potentiometer (typ. 50K...100k
linear) between -12V and + 12V and use it's center terminal as CV source. In
this case you obtain -12V...+12V.
Best wishes
Dieter Doepfer
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[Non-text portions of this message have been removed]2008-07-30 by hardware@doepfer.de
> I am completely ignorant about component of singles modules of > system A 100. I use intuition and poor memory of school to > understand.______In wich kind of modules i can find potentiometer > 50k....100k? How i can connect it? Thank Robert I did not mean to use the potentiometer of an existing module but to take a spare part potentiometer in the 50k...100k range and connect the end terminals to +12V and -12V. At the center terminal one obtains an adjustable voltage in the range -12V...+12V. This could be wired to a 3.5 mm socket (via a 1k protection resistor) to have a simple CV source -12V...+12V aivailable. All elements are available as spare parts from us (potentiometers, sockets, 8HP blind panels - even punched like A-176 for 5 x potentiometer and 5 x socket without printing). Best wishes Dieter Doepfer