[Tim] wanted to help out a ECE student struggling with some Op-Amp problems. He put together a video which does a good job of explaining what an Op-Amp does, then tackles each of the questions one ...

but while preserving the differential inputs of the op-amp. It is unlikely that any of you reading this piece will deal with vintage chart recorders for a living, though the Hackaday readership ...

Part 5 provides spec summary of the GP/R K2-W vacuum-tube op amp and discusses measurement constraints/conditions and LTspice modeled output. The K2-W vacuum-tube op ...