[sdiy] AR Envelope buffer?

[Peter Grenader]

What's the voltage coming out of this envelope?  You should measure it with
the LED attached and with it removed to see the difference.  You've got a
pretty low current limit on that guy (100 ohm) and I'm wondering how much
it's pulling from the output.  Instead of buffering the output of the EG,
you might want to think about driving the LED with a tranny.

I had a similar problem with the Milton pulse banks outs before I gave the
LEDs their own drivers.

- P


> Hello All,
> I built this circuit, an AR generator, and I thought it worked.
> However, just because the envelope light comes one doesn't mean it's
> going to work with a VCA.
> 
> Today I built a VCA, and wanted to test it out. So I plugged the output
> of the envelope into the VCA. It will turn on when given a trigger, but
> it will not do the attack or release stage.
> 
> The schematic is here:
> 
> http://www.sdiy.org/cbrodeur/ar.gif
> 
> I was wondering if a buffer would be the solution. I know the envelope
> is being formed becuase it will light an LED in such a fashion. Could a
> simple buffer made out of an op-amp be the solution?
> 
> I hope this all makes since, my emal composing skills are subpar
> tonight. Thanks for any insight you all can give.
> 
> -Charles
> 
> 
> 
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