[sdiy] Easy expo VCO suggestions for seqencer's LFO clock..

[KA4HJH]

> On Oct 6, 2017, at 11:23 AM, Tom Wiltshire <tom at electricdruid.net> wrote:
> 
> Alternatively, in these modern days of plenty, you could use a 3340!!

As Craig Anderton did with the HyperFlanger (or was one of Thomas Henry's?). IIRC, the main reason he did this was to be able to feed the sawtooth output back into the VCO to produce an exponential sawtooth wave. This eliminated the need for expo conversion on the input to the 4046 to sweep the comb filter response exponentially instead of linearly. I've never heard this effect but it *sounds* interesting. 

Um, I *think* he used a 4046 for the clock. I can't remember now but the trick would work with any linear HF-VCO circuit.

My HyperFlanger manual is lost in a pile somewhere around here, along with most of my thoughts. 8/


Terry Bowman, KA4HJH
"The Mac Doctor"