A capacitor is obtained by placing two conducting plates
near to each other, separated by a non-conducting material called
a dielectric. The capacitance, C, of the capacitor is
measured in farads (F). A voltage across the plates results
in an electric field between them and the current that
flows is directly proportional to the time rate of change
of the voltage across the plates. A capacitor therefore
acts as an open circuit to DC.
Other topics in our resources on Communications Systems related to Capacitor include: