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Old 11th February 2004, 03:30 AM   #1
matjans is offline matjans  Netherlands
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Default signal integrator

hello all, i tried searching for this but somehow i just couldn't really find what i was looking for.

i'm hacking together a sub amp mainly for ht uses (from left over parts mainly) but i wan't to try it on my normal audio set aswell. i'm looking for a schematic of a signal integrator. As simple as possible. R+L --> mono sub.

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Old 11th February 2004, 03:48 AM   #2
Morse is offline Morse  United States
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Hi Matjans;

Take a look at this circuit:

It looks like all you'd really need is a pair of 100kr resistors, a single TL072 with a potentiometer and some caps to buffer the source from the load. I'm considering trying it out myself, so let me know how it works if you try it!

All the best,
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Old 11th February 2004, 01:05 PM   #3
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an integrator is actually a capacitor in the feedback loop. you want a "summer"

National Semi Application Note 31 has a wealth of simple circuits like this.
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