Electronic Circuits for the Evil Genius 2/E

SECTION 16Exploring the Op Amp

THE CIRCUIT IN THIS UNIT is a “teaching” circuit. The job of amplifying can be done using a variety of methods, each one cleaner than the next. But this circuit allows the introduction of a pile of necessary concepts along the way.

Lesson 53 Alternating Current Compared with Direct Current

Here I explain the necessary analogy comparing alternating current as sound and direct current as wind.

Direct Current

We always hear the terms direct current (DC) and alternating current (AC). Direct current means that the current in the system is always flowing in one direction. Electronics depends on direct current. Naturally, flowing water has been a good comparison for positive DC voltage V+. Water always flows in one ...