[sdiy] voltage controlled monostable?

[Michael Ruberto]

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...

I think it could be done pretty easily by making a few changes to a VCO. 
take a basic VCO and use an external clock trigger to reset the timing cap. 
then have a comparator to generate the output. you would be able to obtain a 
gate of any duration by changing the pitch CV. in the Gate sequencer there 
could be a row of voltage divider pots that sum their outputs into the pitch 
CV input. has anybody here built such a device?

Mike

_________________________________________________________________
STOP MORE SPAM with the new MSN 8 and get 2 months FREE*  
http://join.msn.com/?page=features/junkmail