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Re: Pease tuneable MFB band-pass filter


 

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That's what I have now done, but I had strange difficulty in getting rid of the .ASC with the wrong OUT flag.

On 2025-05-16 15:24, Andy I via groups.io wrote:
I agree, a fixed schematic is best.? It would be even better if John had moved the "OUT" node name to the right place.? Oh well.
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But it really was trivial to delete the ".inc" command and the op-amp symbol, and place a new UniversalOpAmp2 symbol in its place.? That's three steps, and done.? For me, I did not find it harder (in fact it's easier) than editing the name next to the op-amp symbol, and it is much easier than also adding the parameters on the other three Attribute lines if they are needed for it to work right.? Still, some are unaware of the UniversalOpAmp* components and how they work.
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Analog Devices did mess things up quite a bit by splitting the UniversalOpAmp component into seven distinct components, which now cause confusion when users try using them for the first time and discover that they might not behave like op-amps do.? They should have left it alone.
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Andy
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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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