Re: Timing is everything - hourglasses question
I was once in an interview shown a circuit by the head of department and asked what it did and what it was for. I looked at it and said "I have not the slightest idea."
"It's a voltage regulator"
(Thinking this was a test) "No, it isn't. you see the diode voltage drop isn't temperature compensated, and the transistor Hfe is also temperature variable in the same direction, so if anything it's a rather nonlinear thermometer."
"It is a voltage regulator. I invented that circuit!"
I didn't for some reason get the job, but it did remind me of the old saying: "What's a fudnik? A fudnik is a nudnik with a PhD."