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Tweakers' Asylum Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ. |
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In Reply to: Schematic above (no text this post) posted by jk on June 17, 2016 at 20:19:11:
Did you use a scope to see the oscillation or or ringing or does it feel really hot to the touch? Also brightness in the sound could be another sign of oscillation.The reason I ask is that your question asking does an opamp get hot when oscillating.
So from I understand from your reply these exact opamp have been used in this exact circuit (crossover) without any problems? the only thing I see that I would change or try is changing the 47 ohm resistors. I would change them to 100 ohm to see if it stops the oscillation (that's if it's really oscillating). This would be quick, simple, and cheap to do.
Also, I have seen sockets cause opamps to oscillate due to the extra capacitance on the socket. Once the socket was removed, the opamp stopped oscillating. This was in a high speed circuit and "shouldn't" cause this in this circuit but you know how electronics go! anything can happen. Wouldn't hurt to try removing and see if that is the cause if all else fails.
Hope this helps!
Edits: 06/17/16
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Follow Ups
- How do you even know it's oscillating? - Cougar 20:48:49 06/17/16 (2)
- RE: How do you even know it's oscillating? - jk 23:03:24 06/17/16 (1)
- Make sure you got the ICs in the right way. - Michael Samra 19:38:09 06/18/16 (0)
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