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Orcad 10.5 question

L

lerameur

Hello,

I have been thought Orcad 10.5 (pspice) to buil my simulation. but so
often I get this error message:
ERROR -- Subcircuit LM393 used by X_U1A is undefined

Can someone tell me how to fix this this.
I use the schematic from here:http://www.swansontec.com/sprobe.htm
Alos I use the LM393 taken from the Orcad Library of the software.
I do not get this with all the components but quite a few (in other
circuits). The way I usually get around it,is to use student pspice and
use similar op-amp. BUt I really want to know how tofix this problem so
I will only use Orcad 10.5
thank you

ken
 
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