Cgs synth

thanks Ken,
I am learning....dioade blocks the neg swing and
the 1k8 and 1 k restor drop the now +15v to 5.3 volts....
thanks!

btw - midwest analog products has a great spreadsheet for
calculating voltage dividers .... I check the math there.....

http://www.midwest-analog.com/dsheets/vdivider.xls

might be use full for folks ....

best wish and again thanks!
I am going to order all the pots I need to complete my
cgs borads today ....

oh, I saw a cgs mixer for sale/bid on ebay ... racked up for
frack rack sized systems.

free the electron

Jeff

--- In cgs_synth@yahoogroups.com, sasami@h... wrote:
> >
> >hi all,
> >starting n a dual psycho lfo panel.
> >I was think of a simple comparator output in addition to the
normal
> >outputs.
> >This extra out would come from a comparator, comparing
> >each p-lfo before the glide circuit. not sure how much design I
need,
> >I was thinking a dual op-amp (tl072) with 1 k inputs resistors
from
> >thelfo tap followed by a second op-amp as a buffer with 1 k output.
>
> Go up to 10k input resistors - less stress on the op-amp inputs.
>
> >no sure what the "high" level will be from the comparator, but
> >whatever the voltage the follower could make it +5 ....
>
> As the op-amp will be across the +/- power rails, the output will
swing
> between + and -, almost reaching the power rail. If you want 5V
out, connect
> a 1N4148 to the output of the opamp (anode to the output). Connect
a 1k8
> from the cathode of the diode to the output jack. Connect a 1k from
the
> output jack to GND
>
> Ken
>
______________________________________________________________________
_
> Ken Stone sasami@h...
> Modular Synth PCBs for sale <http://www.blaze.net.au/~sasami/synth/>
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