[sdiy] Minimoog tuning woes, Op-amp swaps?

[David G. Dixon]

> Please don't.  Instead, teach them about the requirements for op-amp
> stability, about phase margin, how to make op-amps circuits stable
> under various circuit configurations, etc.  Spice will show you a
> rough approximation of how  circuit might behave, but it won't tell
> you *why*.  Once they understand the *why* and the *how* is it worth
> exposing them to the temptations of Spice.

Yeah, that approach works too.  Anything to remove the "voodoo" factor
(e.g., "there's just something magical about the 741 in that circuit").

However, I would counter this by saying that SPICE can also be a powerful
and very convenient teaching tool for demonstrating many of the concepts
Neil mentions.