Getting a Charge Out of Capacitors
In This Chapter
Storing electrical energy in capacitors
Charging and discharging capacitors
Saying “no” to DC and “yes” to AC
Seeing how capacitors react to different frequencies
Using Ohm’s Law (carefully!) for capacitive circuits
Creating the dynamic duo: capacitors and resistors
Exploiting capacitors to block, filter, smooth, and delay signals
If resistors are the most popular electronic component, then capacitors are a close second. Skilled at storing electrical energy, capacitors are important contributors to all sorts of electronic circuits — and your life would be a lot duller without them.
Capacitors make it possible to change the shape (the pattern over time) of electrical signals carried by current — a task resistors alone cannot ...