If you had never heard it before, the term “zero-ohm resistor” might seem at best like an oxymoron or, at worst, some sort of ...

By the end, you’ll understand not only what a resistor is but also why it's essential in everything from tiny circuits to massive industrial machines.

In Part 1 of this five-part series, we examined FET voltage controlled resistors, basic voltage controlled resistor circuits, and a balanced or push pull voltage controlled resistor (VCR) circuit.