Took a punt on this reference attenuator on ebay, to go with some cheap power sensors I got recently, but it seems just a *little bit* out of spec. The seller was nice about it, so it's teardown time once the refund clears!pic.twitter.com/VeG6LL8isY
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The damage on the end wasn't me :) I doubt it happened during assembly, so maybe someone else has opened this up before. I'm not sure if the blackening at the contact point is normal tarnishing, or evidence of too much power going through this part at some point...
I managed to carefully press the PCB out of its housing. Now we can see what's going on properly! It looks like a Pi-attenuator, with a neat grid structure to allow for trimming resistor values after construction.pic.twitter.com/T2sf6G5D4w
and.. there's the problem - some of the traces are completely blown out. Someone put way too much power into this at some point
pic.twitter.com/2bdoIlBPEV
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