Last week I was lucky enough to get tipped off about the last seminar this year for Linear Technology’s free Spice program, LTspice. The seminar was given by the author of the program, Linear Tech ...

If you need a precise time, you could use a microcontroller. Of course, then all your friends will say “Could have done that with a 555!” But the 555 isn’t magic — it uses a capacitor and a comparator ...