[sdiy] tongue stuck to skipole

[Cynthia Webster]

I've had success doing this on a limited basis, "up-voting" selected 
vintage Serge PCBs,
but I've never done this with a whole panel before.

I suggest that you examine each and every integrated circuit on the 
specific Serge panel boards
and do diligent research by actually looking-up the spec sheet of the 
chips that you have installed
to makes sure that they can handle the extra voltage.  (Each chip 
species often has several variations
coded after the part number with alphabet letters and I would look at 
these carefully to be sure.

Instead of simply reading "TL072", you would examine the entire 
"TL072BCD"  for example.
(You will probably have better luck with this with newer panels than 
with old, do you think?)

Also, many "15 Volt" supplies have a pair of trim pots for precise 
adjustment and it may be
quite possible for you to attached a simple voltmeter to the outputs and 
then trim them down
from +/-15 volts to +/-12, (thus rendering the afore mentioned question 
rather moot).

BTW, the Mark Godfry update/replacement for the defunct but oh so lovely 
Gentle Electric
Pitch to Voltage Converter module looks pretty niffy in it's own right, 
thanks Aaron!

peace


Cyn


http://www.cyndustries.com/



Anthony Bisset wrote:
> Before this happens to me, I figured I'd ask:
>
> Is there any reason I couldn't run serge at +/-15v?
>
> I'm not concerned with 1v/octave tracking.  (i prefer to tune each CV as
> i'm playing, it affords more interesting scales so i actually pulled all
> the fixed 1v/octave inputs off the front panel and tied them together at a
> single input for a sort of pol-pot attack, ie, when i get bored
> i can modulate all modules).
>
> There was some discussion of this recently indicating i might need to
> amplify this MEGAMULT signal, but because i'm living on the un-impeded
> lifestyle, does it really matter?
>
> unorthodox cheers, feet kicking mud at sky.
> -anthony
>
>
>
>  On Sun, 8 Apr 2007, Aaron Lanterman wrote:
>
>   
>> On Sat, 7 Apr 2007, bill bigrig wrote:
>>
>>     
>>> If you are going for a pitch to control voltage
>>> module, go to mark.godfrey at gatech.edu. Ask for
>>> "ECE4803 final project". I am holding in my hand his
>>> design that uses a LM2917N and a quad TL084, and a
>>> CA3046 along with some odds and ends to make one. It
>>>       
>> You can find that here
>>
>> http://users.ece.gatech.edu/~lanterma/studentprojects/
>>
>> One of these days I'll get around to posting the projects from the Fall
>> 2006 offering...
>>
>> - Aaron
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