Doepfer

Hi ,
 is the first time I post a matter on the forum , my English is to bad 
For translate my wish and my ideas :)

I would like to know if it was possible Dieter making a module who 
accept the exchange ( Convert  1V/Oct in 1.2, Gate/Pulse, 
Minijack/Banane ... ) with Buchla B200e ?

It was nice for persons who have some A100 Modular system , connect 
with Complex waveform generator model 261e or 259e  and other ...

Cheers

Eric/belempa

--- In Doepfer_a100@yahoogroups.com, Chris Muir <cbm@...> wrote:
>
> 
> On May 20, 2008, at 10:16 AM, Eric Normand wrote:
> > I would like to know if it was possible Dieter making a module who
> > accept the exchange ( Convert 1V/Oct in 1.2, Gate/Pulse,
> > Minijack/Banane ... ) with Buchla B200e ?
> 
> 
> Harvestman has a module like this in the planing stage:
> http://www.theharvestman.org/1963.htm
> 
> -C
> 
> Chris Muir
> cbm@...	
> http://www.xfade.com


Thank's Chris , but is not in production ( manufacture ) is it ? 
Eric
>

On May 20, 2008, at 10:16 AM, Eric Normand wrote:
> I would like to know if it was possible Dieter making a module who
> accept the exchange ( Convert 1V/Oct in 1.2, Gate/Pulse,
> Minijack/Banane ... ) with Buchla B200e ?


Harvestman has a module like this in the planing stage:
http://www.theharvestman.org/1963.htm

-C

Chris Muir
cbm@well.com	
http://www.xfade.com

--- In Doepfer_a100@yahoogroups.com, <hardware@...> wrote:
>
> > Hi ,
> > is the first time I post a matter on the forum , my English is to 
bad
> > For translate my wish and my ideas :)
> >
> > I would like to know if it was possible Dieter making a module who
> > accept the exchange ( Convert 1V/Oct in 1.2, Gate/Pulse,
> > Minijack/Banane ... ) with Buchla B200e ?
> >
> > It was nice for persons who have some A100 Modular system , 
connect
> > with Complex waveform generator model 261e or 259e and other ...
> >
> > Cheers
> >
> > Eric/belempa
> 
> The 1 -> 1.2 V/octave conversion can be realized with a modified A-
185-2. We
> could manufacture a special version of the A-185-2 with an 
amplification of
> 1.2 instead of 1.0. The additional charges will be not too much as 
only a
> couple of resistors have to be replaced (120k instead of 100k). The 
mini
> jack -> Banana conversion can be realized DIY (nothing but a blind 
panel
> with  a jack socket and a banana socket internally connected).
> 
> Best wishes
> Dieter Doepfer
> 
> P.S. Why are they called Banana ? I can't see any similarity :-)
>


Hi Dieter ,
Thank's for reply , 
Yes it was nice if you could manufacturate this module .
But it would need also the "A-185-1" Bus-access ?
On the B200e CV/Gate is : Pitch and Note on .
I don't know too Why Bananas live in B200e ! :D
Regards
Eric/belempa

> Hi ,
> is the first time I post a matter on the forum , my English is to bad
> For translate my wish and my ideas :)
>
> I would like to know if it was possible Dieter making a module who
> accept the exchange ( Convert 1V/Oct in 1.2, Gate/Pulse,
> Minijack/Banane ... ) with Buchla B200e ?
>
> It was nice for persons who have some A100 Modular system , connect
> with Complex waveform generator model 261e or 259e and other ...
>
> Cheers
>
> Eric/belempa

The 1 -> 1.2 V/octave conversion can be realized with a modified A-185-2. We
could manufacture a special version of the A-185-2 with an amplification of
1.2 instead of 1.0. The additional charges will be not too much as only a
couple of resistors have to be replaced (120k instead of 100k). The mini
jack -> Banana conversion can be realized DIY (nothing but a blind panel
with  a jack socket and a banana socket internally connected).

Best wishes
Dieter Doepfer

P.S. Why are they called Banana ? I can't see any similarity :-)

On May 21, 2008, at 12:13 AM, hardware@doepfer.de wrote:
>
> P.S. Why are they called Banana ? I can't see any similarity :-)
>
>

The "banana" similarity is in the banana plug, not the banana jack.  
Think of a straight banana and the ridges of the banana peel look  
similar to the metal-spring-like sides of the connector on the banana  
plug.

I don't think I have ever types banana this many times in a message  
before...

-James

>
> P.S. Why are they called Banana ? I can't see any similarity :-)
>
>

I made a photo to the files section to show this a little better I  
hope (love that PhotoShop):

http://launch.ph.groups.yahoo.com/group/Doepfer_a100/photos/browse/ 
f53b?c=

-James

--- In Doepfer_a100@yahoogroups.com, James Husted 
<the_ersatz_planet@...> wrote:
>
> 
> >
> > P.S. Why are they called Banana ? I can't see any similarity :-)
> >
> >
> 
> I made a photo to the files section to show this a little better I  
> hope (love that PhotoShop):
> 
> http://launch.ph.groups.yahoo.com/group/Doepfer_a100/photos/browse/ 
> f53b?c=
> 
> -James
>

Hi James,
Nice Banana Jacks :-)  and good work with Photoshop .

Eric/belempa

Thanks! - I'm in Photoshop about 80% of my workday - sigh...  It  
would have been a lot better work if I had takes the photos myself  
(the other 20% of the workday), I just snagged them off the net.   
Wait till I get time to mock up a pic of a VC iPod nano module I  
would love to have designed for me.
-James

On May 22, 2008, at 1:41 AM, Eric Normand wrote:

> --- In Doepfer_a100@yahoogroups.com, James Husted
> <the_ersatz_planet@...> wrote:
>>
>>
>>>
>>> P.S. Why are they called Banana ? I can't see any similarity :-)
>>>
>>>
>>
>> I made a photo to the files section to show this a little better I
>> hope (love that PhotoShop):
>>
>> http://launch.ph.groups.yahoo.com/group/Doepfer_a100/photos/browse/
>> f53b?c=
>>
>> -James
>>
>
> Hi James,
> Nice Banana Jacks :-)  and good work with Photoshop .
>
> Eric/belempa
>
>
>
> ------------------------------------
>
> Yahoo! Groups Links
>
>
>

There's also the issue of Gate & Trigger <-> Buchla Pulse

I may be a little off on the specifics here (I don't have a scope) but  
the Buchla pulse jacks carry the equivalent of a gate and trigger. The  
trigger is imposed on the gate level. Bad ASCII art:
        _
10v   | |
       | |
5v    | ----
       |     |
0v. ---     ------

-C

Chris Muir
cbm@well.com	
http://www.xfade.com








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

That is a very neat method (combining a gate and a trig in one signal)  
- I didn't know they did that. I imagine that summing both a 5V  
trigger and a 5V gate would do that. When both are present you would  
get the Buchla Pulse. The summing would not have to be spot-on to  
work. I would think a circuit that took a Doepfer gate in, did a  
rising edge detection to produce a trig and summed it with the  
original gate would work.
-James

On May 22, 2008, at 10:51 AM, Chris Muir wrote:

>
> There's also the issue of Gate & Trigger <-> Buchla Pulse
>
> I may be a little off on the specifics here (I don't have a scope) but
> the Buchla pulse jacks carry the equivalent of a gate and trigger. The
> trigger is imposed on the gate level. Bad ASCII art:
>        _
> 10v   | |
>       | |
> 5v    | ----
>       |     |
> 0v. ---     ------
>
> -C
>
> Chris Muir
> cbm@well.com	
> http://www.xfade.com
>
>
>
>
>
>
>
>
> [Non-text portions of this message have been removed]
>
>
> ------------------------------------
>
> Yahoo! Groups Links
>
>
>

> > I may be a little off on the specifics here (I don't have a scope) but
> > the Buchla pulse jacks carry the equivalent of a gate and trigger. The
> > trigger is imposed on the gate level. Bad ASCII art:
> > _
> > 10v | |
> > | |
> > 5v | ----
> > | |
> > 0v. --- ------
> >
> > -C
> >
> > Chris Muir

To obtain this signal you simply have to add the gate and the trigger (e.g.
with an A-138 though this module is a bit overstated for this function,
probably two resistors can do the same job too).

To obtain gate and trigger from such a signal two comparators are required
(e.g. A-167), one for the "window" between 0 and +5V (gate) and one for
+5...+10V (trigger). It would be very easy to built such a module but I'm
not sure if there are sufficient inquiries. And if Scott Jaeger has such a
module in the planning state we will not compete with him.

Best wishes
Dieter Doepfer

--- In Doepfer_a100@yahoogroups.com, <hardware@...> wrote:
>
> > > I may be a little off on the specifics here (I don't have a 
scope) but
> > > the Buchla pulse jacks carry the equivalent of a gate and 
trigger. The
> > > trigger is imposed on the gate level. Bad ASCII art:
> > > _
> > > 10v | |
> > > | |
> > > 5v | ----
> > > | |
> > > 0v. --- ------
> > >
> > > -C
> > >
> > > Chris Muir
> 
> To obtain this signal you simply have to add the gate and the 
trigger (e.g.
> with an A-138 though this module is a bit overstated for this 
function,
> probably two resistors can do the same job too).
> 
> To obtain gate and trigger from such a signal two comparators are 
required
> (e.g. A-167), one for the "window" between 0 and +5V (gate) and one 
for
> +5...+10V (trigger). It would be very easy to built such a module 
but I'm
> not sure if there are sufficient inquiries. And if Scott Jaeger has 
such a
> module in the planning state we will not compete with him.
> 
> Best wishes
> Dieter Doepfer
>


Hi , Dieter, Chris , 

Well ,
 I have to wait for this Scott Jaeger module so if I want one day to 
make some topic' between A100 and my small B200e , ;-)
Cheers
Eric/bemlempa