It is spooky season after all... (lemmy.world)

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I have had this teapot about 3 months and in this last month it has been in constant use and yesterday these stains appeared, is it rust? Should I throw away the kettle or can it be saved?
Hee hee ho ho xd
My old person trait is that I think ‘ghosting’ is completely unacceptable and you owe the other person a face-to-face conversation.
Since I never understood op-amps from reading or practicing problems I wanted to build a circuit to probe around and use different resistor values to set the amplification....
What I've done is take a large 2n3055 BJT NPN power transistor, and decap it (it is a large metal-can type). Then I carefully removed any coating from the exposed silicon (it typically has a dab of silicone potting compound on it)....
https://a.imagem.app/oZHIji.png...