Electronics Intermediate 2

As useful and as easy to understand as DC is, it is not the only “kind” of

electricity in use. Certain sources of electricity (most notably, rotary

electro-mechanical generators) naturally produce voltages alternating in

polarity, reversing positive and negative over time. Either as a voltage

switching polarity or as a current switching direction back and forth, this

“kind” of electricity is known as Alternating Current (AC).