[sdiy] CV to rotary encoder?

[Florian Anwander]

Hi Paul 

> A lot of gear now has a rotary encoder..
> there is probably an easy way to make a CV to rotary encoder
> converter, so when the CV increases by yea much, the encoder
> goes foward one unit and so on.
> Or just keeps going up while CV is above a threshold, back
> when below it.
You think of something that has a Voltage input and two outputs that send
triggers for counting up respectively down? What about the following
suggestion:

- First sample and hold the incoming voltage with a clock. 
- Then compare the output signal of the S&H stage with the 
  original Voltage.
- If the difference is larger than a certain threshold, this 
  initiates a trigger, that is clocked again by the clock, that 
  also triggers the S&H.

Florian