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ROSELJR

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  1. Can diodes 5408 and 5404 be used in common? Thanks in advance.
  2. The gain bandwidth product is 8MHZ, my magnification here: 0.41. 0.41*4K=1.6K, arguably, it is completely satisfied. VR1 is used for zero adjustment, so we can leave it alone. It looks like the op amp is very hot at 40 degrees when I use it, and I don’t know why can you tell me? Thanks in advance.
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