[sdiy] SAW core VCO flyback time

[Tim Ressel]

I was just going to comment on this. The reset time is a negative 
because it is unpredictable. If a fixed reset is generated on purpose 
then it is predictable and can potentially be calibrated out. The 
Chroma, using a 4151 IC (datasheet?) serves this function.

--tr



On 9/3/2016 4:42 AM, Mattias Rickardsson wrote:
> On 30 August 2016 at 23:41, Donald Tillman <don at till.com> wrote:
>> The ARP/Rhodes Chroma VCO had a unique charge pump VCO core that had a long reset time, but the reset didn't introduce a tuning delay in the cycle.
> That's interesting, a neat way of getting rid of the time issue - but
> why isn't this more widely used? Were there other drawbacks or
> imperfections that made it less practical?
>
> Speaking of the ARP/Rhodes Chroma,
> if anybody has the service manual in a better PDF form than
> one-PDF-per-page then I'd be more than happy to take a look. :-)
> Impressive info site, however:
> http://www.rhodeschroma.com/?id=servicemanual
>
> /mr
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-- 
--Tim Ressel
Circuit Abbey
timr at circuitabbey.com