[sdiy] Again- LFO, working

[Happy Harry]

No reason for it not to work with two packages. Might have some
probalem with how you disabled the unused sections... or what
ELSE those sections were used for. If you try it again... I usually
ground the unused non-inverting input... and tie the usused output to
the unused inverting input...

making a voltage follower with ground for an input. This is usually
a good way to tie unused opamps... with a few exceptions (that someone
else will fill in...)

H^) harry


>From: xmurz at gmx.de
>To: synth-diy at dropmix.xs4all.nl
>Subject: [sdiy] Again- LFO, working
>Date: Fri, 29 Mar 2002 13:22:01 +0100 (MET)
>
>Hello!
>
>The 2 LFO's I tried (ASM-1 and Modulus) were not working.
>
>The Modulus e-zines can be found at:
>http://www.modulus.wavesynth.com/modular/modular.htm
>(as somebody asked for the address)
>
>I now got the ASM-1 LFO to work nicely.
>The problem was, that I had the non inverting opamp
>on one TL082, and the inverting opamp on another TL082.
>Now that I got both parts on one TL082 it works.
>(Don't ask my, why I dit it with 2, to begin with.)
>
>Now my question:
>Why is it not working with 2 seperate opamps???
>
>Then there is the 22R Resitor. I substituted a
>trimmer for that part, because a 22R value caused
>my LFO to go towards (aproximately) 10V + without
>returning back down on the lowest LFO speed.
>
>A trimmer enables me to get to poti down to very
>low speed without going up to 10V+.
>The trimmer will set be set to >22R
>
>Is that normal???
>
>Will all parts of the ASM-1 work on a +-12V PSU?
>
>Regards,
>   Hans
>
>--
>GMX - Die Kommunikationsplattform im Internet.
>http://www.gmx.net
>




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