[sdiy] classic transistor VCO's

[mark verbos]

sell them to ARP who didn't do any matching? ;)

just kidding.


Mark




On Jan 1, 2009, at 12:34 PM, harrybissell at wowway.com wrote:

> The (usual) catch is that transistors are often sorted
> in pairs, etc.  You may need to match NPN pairs, or PNP pairs..
>
> or worse, an NPN/PNP pair for an expo converter.  Its not hard to
> do but you might get a batch of transistors that yeilds a LOT of
> good pairs, or one that is almost useless.
>
> For manufacturing, this is a bad thing. What do you do with the
> fallouts ?
>
> Poly-Paks anyone ??
>
> H^) harry
>
>
>
> On Thu, 1 Jan 2009 07:59:42 +0000, Dan Snazelle wrote
>> Ok
>>
>> so i got the Odyssey manual and the 2600 oscillator sub module
>> (although i cant find schematic for the earliest vco submodules)
>>
>> and all i can say is WOW
>>
>> it is SO easy to READ compared to MOOG or BUCHLA.
>>
>> so, i guess my question is WHAT IS THE CATCH? all this easy to read
>> stuff seems like a gold mine of ideas!!
>>
>> thanks
>>
>> wasnt someone doing an Odyssey vco pcb at some point?
>>
>> --------------------------------------------
>> check out various dan music at:
>>
>> http://www.myspace.com/lossnyc
>>
>> http://www.soundclick.com/lossnyc.htm
>>
>> http://www.indie911.com/dan-snazelle
>> (or for techno) http://www.myspace.com/snazelle
>>
>> ________________________________
>>> Date: Wed, 31 Dec 2008 21:17:02 -0600
>>> From: megaohm1 at gmail.com
>>> To: subjectivity at hotmail.com
>>> Subject: Re: [sdiy] classic transistor VCO's
>>> CC: synth-diy at dropmix.xs4all.nl
>>>
>>> Various ARP VCOs are discrete. I'm thinking of the Odyssey  
>>> oscillators.
>>>
>>> On Wed, Dec 31, 2008 at 2:45 PM, Dan Snazelle> wrote:
>>>
>>>
>>>
>>>
>>>
>>> ok
>>>
>>>
>>>
>>> the recent topics have gotten me looking for small vco's or  
>>> noisemakers
>>>
>>>
>>>
>>> i remembered the 303 had a transistor VCO but even with XOXBOX  
>>> redrawn
> schematics, the schematic is a bit confusing) (this could just be  
> the layout
> of the schematic)
>>>
>>>
>>>
>>> but there must be others.
>>>
>>>
>>>
>>> I know ems used transistor vcos at some point
>>>
>>>
>>>
>>> are there any others? the key here is small and not stable
>>>
>>>
>>>
>>> heck, it could even be some wildly unstable magazine vco.
>>>
>>>
>>>
>>> i am just wanting to get some small transistor circuits going ( a  
>>> la ciat
> lonbarde)
>>>
>>>
>>>
>>> anyway.....hope this topic isnt too similar
>>>
>>>
>>>
>>>
>>>
>>> thanks
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>> --------------------------------------------
>>>
>>> check out various dan music at:
>>>
>>>
>>>
>>> http://www.myspace.com/lossnyc
>>>
>>>
>>>
>>>
>>>
>>> http://www.soundclick.com/lossnyc.htm
>>>
>>>
>>>
>>>
>>>
>>> http://www.indie911.com/dan-snazelle
>>>
>>> (or for techno) http://www.myspace.com/snazelle
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>> _______________________________________________
>>>
>>> Synth-diy mailing list
>>>
>>> Synth-diy at dropmix.xs4all.nl
>>>
>>> http://dropmix.xs4all.nl/mailman/listinfo/synth-diy
>>>
>>>
>>
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>
>
> Harry Bissell & Nora Abdullah 4eva
>
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