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Tweakers' Asylum Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ. |
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Tweakers' Asylum Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ. |
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In Reply to: Oscillation issue DQ LP1's "upgraded" op amps posted by jk on June 17, 2016 at 07:50:58:
output pin of the opamp. You may have to put a 100 ohm resistor on the output of the opamp to isolate it from the circuit that comes after directly connected to that opamp's output pin.Sometimes you can't just drop in a different opamp and it works perfectly.
Try the decoupling caps on the +/- pins .1uf-.01uf. if that doesn't work then add the 100 ohm resistor. Sometimes a compensation cap is need but that should be the last resort.
It would be nice to see the schematic to help us. Is the opamp the same gain as the original? also can it drive high capacitance load? Also haveyou done anything else to the surrounding circuit that was designed for the original opamp?
Edits: 06/17/16
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- some opamps don't like driving high capacitance loads directly off the .... - Cougar 19:01:39 06/17/16 (0)
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