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 Forum index » DIY Hardware and Software » fonik's place
Comparator+ Module
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fonik



Joined: Jun 07, 2006
Posts: 3759
Location: Germany
Audio files: 23

PostPosted: Thu Jan 05, 2012 4:46 am    Post subject: Comparator+ Module Reply with quote  Mark this post and the followings unread

last year i built myself this nice comparator module:


http://www.modular.fonik.de/Page58.html

this is a nice one, i think: the incoming voltage on In 1 (with attenuation) is compared to the voltage at In 2 (with attenuVERTion). The In 2 is normalled to 8V, so you can compare the incoming voltage to a manually set level from -8V to +8V, due to the attenuvertion control at In 2.
from the result a gate, an inverted nate, a short trigger, and the sum is created.
currently the module creates a trigger on the rising AND the falling edge of the gate. by now i am not quite sure if this is a feature or a bug. one could use it to create a swinging trigger from a PWM pulse. (anyways, i added another diode to the schematic and i will try this soon).
thanks to the summing stage this module could also be used as a voltage processor, and/or a 2-in-1 mixer.

current schematic

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diablojoy



Joined: Sep 07, 2008
Posts: 795
Location: melbourne australia
Audio files: 11

PostPosted: Wed Jul 04, 2012 7:35 pm    Post subject: Reply with quote  Mark this post and the followings unread

been thinking a bit about this one again just recently
and perhaps have come up with a bit of an idea
which i might try out
goes something like this
An incoming CV signal going to 4 or even 8 window comparators with adjustable lower and upper limits the resulting pulses then to be anded with a clock input to provide gate and trigger outs.
the inputted CV could be anything from a sequencer output , to an LFO [just the positive half of the signal] or even an ADSR .
The result should be very definable and repeating gates and triggers
Was also thinking to add a cascaded Xor function output which looked quite interesting on a logic simulator at least
any thoughts matthias ?

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