Signal Report

One time during my classes at university, the professor teaching our electronics project course said "if your circuit exhibits the behavior of a time variant system , then something is horribly wrong". This has been true for pretty much all of my experiences - a consistent circuit behavior which is independent of time. However one day, this was not the case, and it seemed I had a "time variant" circuit.   Needed it Yesterday. At the time of this time variant circuit, I was working for a startup company. As you can imagine, time is of the essence. I could release a board design on a Friday and have a built prototype ready for a smoke test by the following Friday. Digi-Key orders on a Friday morning would leverage time zones and weekend shipping. The PCB was made locally on a 2 day spin (I miss you CircuitLabs). When boards and components arrived, I'd pick-and-place the parts by hand with tweezers. Manual and expensive, but fast. Not much was required for tools. F