I mean, in a certain sense physics-based or mechanical engineering-based metaphors for electrical engineering problems are not metaphors, because the mathematics representing these problems are not merely similar enough to draw a useful comparison, but they are actually identical down to every last number. And since numbers are the only objects that exist, any work that can be done by the devices described in these EE problems can be done equally well by the devices described in these ME and physics problems.[After clicking that link try this one, it's pretty fun.]
Anyway, the point of my last post that I didn't mention to you is that I'm not going to be able to explain what an LM555 Timer Integrated Circuit does without first explaining what a multivibrator is. [And I won't be able to explain how an #LM555 Timer IC works without first explaining what a comparator and a flip-flop is.]So, a multivibrator is a circuit that has multiple states, with rules that describe when the state changes.
Anyway, here are some pictorial examples of one mode of multivibrator, an astable multivibrator.EXAMPLE ONE: Electrical engineering
EXAMPLE TWO: Physics
So, the ball moves back and forth, the electrons on the capacitors move back and forth. If you put the same numbers in for the slopes as you did for the resistors, and the heights that you did for the capacitors, and assume that friction doesn't exist, then it's the same damn equation that describes the ball and the electrons.Likewise for the other two modes.
If the ball is at point B, it moves to point A. If the ball is at point A, it stays there. The parameters affect how long it takes to get from B to A and that's it.Bistable:
There you go, three types of circuits that do things exactly like balls on funny shaped hills. Even a caveman could understand it!