Chapter 8 Terms

1. a periodic current which changes in value but never changes direction
3. the repeated occurrence of two things in turn
4. the time required to complete one cycle
5. type of electrical current, in which the direction of the flow of electrons switches back and forth at regular intervals or cycles
8. an electric current that reverses its direction many times a second at regular intervals, typically used in power supplies
10. a representation of how alternating current varies with time
11. a sawtooth wave ramps upward and then sharply drops

2. a curve representing periodic oscillations of constant amplitude as given by a sine function
3. a voltage that reverses direction in regular cycles
6. a non-sinusoidal periodic waveform in which the amplitude alternates at a steady frequency between fixed minimum and maximum values
7. the rate at which cycles are produced
9. a series of events that are regularly repeated in the same order