[sdiy] quick 13700 question

Ray Wilson raywilson at comcast.net
Fri Jun 26 14:28:57 CEST 2009


43 mV P-P is a little too hot for the input. Try increasing the 100K to 
about 200K and possibly reducing the 220 ohm as well.


----- Original Message ----- 
From: "Dan Snazelle" <subjectivity at hotmail.com>
To: <synth-diy at dropmix.xs4all.nl>
Sent: Friday, June 26, 2009 5:14 AM
Subject: [sdiy] quick 13700 question


>
>
> can someone refresh my memory on how to figure out the gain for an OTA 
> stage (13700)
>
> when i put a +/- 10 volt saw through a follower into a 100k into the ota 
> with a 220 ohm to grnd on both + and - pins, i see a square
> wave on my scope coming out of the output of that stage
>
>
> so i need to remember how to get the input back within the ota's range.
>
>
>
> thanks
>
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