Synth-diy-test

I always assumed you could multiplex output of an exponential converter. 
Cool that it was done.

On 3/21/26 12:18 PM, Gordonjcp wrote:
> On Fri, Mar 20, 2026 at 10:40:57PM +0000, Tom Wiltshire wrote:
>> The Korg Polysix kind-of was. The VCOs were linear, and there was an expo convertor that was multiplexed out to each of them, if I remember. There's a schematic I drew of the VCO design flying around on the web.
>>
> How do they get tuned, and what's the kind of optocoupler thing associated with CV generation for?
>