UNTRANSLATED .. 2.5

Direct and Alternating CurrentsΒΆ

Objective

Introduce the concept of time dependent voltages, using a V(t) graph. Compare the graph of DC and AC.

_images/ac-dc.svg

Procedure

  • Set PV1 to 2 volts and Set WG to 200 Hz
  • Enable analyse on A1, to measure amplitude and frequency.
  • Enable A2

Discussion

In the plot if voltage is not changing, it is pure DC. If the voltage is changing with time, it has an AC component. if the average voltage is zero, it is pure DC. In the second plot, the voltage is changing from zero to file volts, is it AC, DC or something else ???

_images/ac-dc.png _images/sqr-wave.png