Q. Show Steady-State Sinusoidal Analysis with PSpice

PSpice can easily solve steady-state ac circuits for currents and voltages. Ac voltage sources, which must begin with the letter V, are specified by statements of the form

VNAME N+ N- AC VPEAK PHASE

whereVNAME is the name of the voltage source,N+is the node number of the positive reference, N- is the node number of the negative reference, AC indicates that this is an ac source, VPEAK is the peak value of the voltage, and PHASE is the phase angle of the source in degrees. Current sources, which must begin with the letter I, are specified in a similar manner, with the reference direction for the current source pointing from the first node number given in the statement to the second node number.

The ac analysis request is made with a statement of the form

• AC LIN NPOINTS STARTFREQ STOPFREQ

where • AC designates a request for frequency analysis, LIN defines a linear frequency sweep with NPOINTS specifying the number of points in the sweep starting at the STARTFREQ and finishing at the STOPFREQ. For example, to carry out a steady-state ac analysis for a frequency of 60 Hz, the analysis request would be

• ACLIN16060