[sdiy] VC phase shift in Tillman's quadrature trapezoid VCO

[ulfur hansson]

understood :) very excited to play around with your product!

Sent from outer space

> On Jun 28, 2018, at 2:51 PM, Donald Tillman <don at till.com> wrote:
> 
> Hi.
> 
> I'm planning on making this a product, so I'm keeping this particular technology quiet until it comes out.
> 
>   -- Don
> --
> Donald Tillman, Palo Alto, California
> http://www.till.com
> 
> 
> 
>> On Jun 28, 2018, at 6:50 AM, Guy McCusker <guy.mccusker at gmail.com> wrote:
>> 
>> Dear list,
>> 
>> There is one obvious list member who may be best to answer this but it
>> doesn't hurt to spread the net a little more widely I hope...
>> 
>> Don Tillman's fascinating articles on his Quadrature Trapezoid VCO
>> 
>> http://till.com/articles/QuadTrapVCO/index.html
>> 
>> include the tantalising sentences ""The quadrature trapezoid core also
>> enables the implementation of voltage controlled phase shift over a
>> multiple cycle range. I'll cover the details of this in a later
>> article." As far as I can tell this later article did not appear.
>> 
>> I have tried to figure out how VC phase shift might be implemented but
>> so far I am not smart enough.
>> 
>> Can anyone point me in the right direction please?
>> 
>> All the best,
>> Guy.
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>> 
> 
> 
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