VCO Range selector

PickNick · Joined: Oct 16, 2009 Posts: 82 Location: BP

hi!
i built two Yusynth VCO.
works great!
now i planning to replace the 20K freq pot with Jaxley///range selector.
there is any easy way to do this modification and keep the correct V/oct?

Sebo · Joined: Apr 27, 2007 Posts: 564 Location: Argentina

Hi:
I don't know how the Jaxley range selector works, but I reeplaced the coarse pot
with an octave selector that adds 1V for every step, and I have to change the
resistor in the summing input of the VCO for the same value is used for the
1V/Oct inputs (from 270K to 100K).

PickNick · Joined: Oct 16, 2009 Posts: 82 Location: BP

thanks for your quick response Sebo!
i have a rotary switch/6pos 1 circuit.
can you explain how did the 1V octave selector?