Electronics > Projects, Designs, and Technical Stuff

OP amp equivalents

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cowasaki:

--- Quote from: mzzj on October 20, 2019, 03:47:51 pm ---Hard short circuits are at least easy to fix compared to something that just misbehaves occasionally.  |O

--- End quote ---

Yes. Looking forward to using my new workshop. Just waiting for my son in law and son to arrive to collect the last bit of furniture and then I can put everything away and look at the board. I’m collecting a load of variacs tomorrow hopefully that should avoid some possible issues with further repairs.

dom0:
If you shorted a driver in the output stage then it is quite probable that both (but very likely at least one) halves of the output stage are dead.

cowasaki:

--- Quote from: dom0 on October 20, 2019, 05:13:37 pm ---If you shorted a driver in the output stage then it is quite probable that both (but very likely at least one) halves of the output stage are dead.

--- End quote ---

I will be having a look tomorrow. These were the transistors prior to the final output stage transistors (Q9) as per attached schedule. I ran out of time but my workshop is now free for me to have a proper look.

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