[sdiy] voltage controlled monostable?

Gur Milstein gur_mil at hotmail.com
Thu Jun 19 19:59:30 CEST 2003


Hi Ruberto and all .

>I was thinking about building some very complicated logic thing with BCD 
>switches, Shift registers, binary counters, magnitude comparators and a PLL 
>in order to have a gate sequencer where each step could have a variable 
>gate length. now on paper the design seems sound and probably would have 
>worked until I thought about the cost of putting BCD switches on each stage 
>- alot of money!!!
>so there has to be a cheaper way to do it...

This is done in our TM-116 in a much simple way :
you pluge pulse out of a VCO/LFO to the clock input of the sequencer , then 
PWM the VCO/LFO and you get a variable gate length from the gate output of 
the sequencer .
if the cv out of the sequncer is modulating the VCO/LFO PWM then each step 
gate length is define by the potentiomter of that step .

Cheers
Gur Milstein
ANALOGIC Analog Control System

www.analogic-acs.com

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