DC Sweep Analysis
As this analysis is performed in Multisim, the following procedure is performed.
1) The DC Operating Point is taken.
2) The value from the source is incremented and another DC Operating Point is calculated.
This procedure allows you to simulate the circuit many times, sweeping the DC values within a pre-determined range. You can control the source values by choosing the start and stop values and the increment for the DC range. The bias point of the circuit is calculated for each value of the sweep. To calculate the DC response of the circuit, SPICE treats all capacitors as open circuits, all inductors as shorts, and uses only DC values of voltage and current sources.