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Re: Pease tuneable MFB band-pass filter

 

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That's not the problem. You have not called for .lib UniversalOpAmp1.lib on your schematic.

On 2025-05-16 17:59, Tim Hutcheson via groups.io wrote:
@John Woodgate
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John does your OpAmp.sub look like this?
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.SUBCKT OpAmp 0 N003 V+ V- OUT
X1 0 N003 V+ V- OUT level1 Avol=1Meg GBW=10Meg Vos=0 En=0 Enk=0 In=0 Ink=0 Rin=500Meg
.lib UniversalOpAmp1.lib
.ENDS
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It runs fine here.
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Tim
--
Best wishes John Woodgate RAYLEIGH Essex OOO-Own Opinions Only If something is true: * as far as we know - it's science *for certain - it's mathematics *unquestionably - it's religion

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