Alternating Current Application

Figure 16-1 shows the out put from an voltage generator, with the reversals between positive and negative polarities and the variations in amplitude. In Fig. 16-1a, the wave from shown simulates an ac voltage as it would appear on the screen of an oscilloscope, which is an important test instrument for ac voltages. The oscilloscope shows a picture of any as voltage connected to its input terminals, while indicting the amplitude. The details of how to use the oscilloscope for ac voltage measurements are explained in App. D. “Using the oscilloscope”.
In Fig.16-1b the