Drawing time diagrams

Using the Interpreter, you can define arbitrary functions of time and plot the results in the time domain.

Referring to the following RL circuit entered as a schematic diagram, run transient analysis with the given defaults. Then use the Interpreter to plot the theoretical result.

e5_1.gif

i) The time response is:

Iprbook00000021.gif

Enter this response directly in the Interpreter, referring to the schematic parameters and using the Draw command:

Draw( 1-exp( -R/L*t ), MyResult )

We can compare the computed result and the theoretical result (in this case, the results are almost the same).

ii) Changing the R parameter, we can see how the output signal changes. We use three instances of the Draw command, each with a different R parameter, to place three curves on the diagram:

Draw( 1-exp( -R/L*t ), MyResult1 )

Draw( 1-exp( -2*R/L*t ), MyResult2 )

Draw( 1-exp( -3*R/L*t ), MyResult3 )

e5_2.gif