Your SPICE simulator has you covered with a simple but powerful simulation: transient analysis. Whether you’re working with digital circuit or analog systems, you can use time-domain simulations to better understand how your system starts up and reaches a steady state. The exponentially decreasing curve in the above graph implies the discharging phenomenon of the capacitor.Today’s PCB designers often need to live a double life as a circuit designer, which might involve hand calculations or simulations to understand circuit behavior. the polarity of the voltage will be in accordance with polarity of the capacitor and the capacitor will start charging during the positive half cycle, whereas during the negative half cycle due do the inversion the polarity of the voltage source, the polarity of the capacitor will be opposite to that of the source, hence taking into account the charging and discharging concept of a capacitor, the capacitor will start discharging the stored charge ( during the positive half cycle) to the circuit.

During the positive half cycle, the direction of the current i.e. One is the positive half cycle of the AC signal and the other is the negative half cycle. As in case of an AC circuit the input signal source consists of two half part or cycles. The decreasing sweep at the capacitor node here implies the discharging of the capacitor.The output voltage at the capacitor node is displayed in the figure below,įigure 20: Output voltage at the capacitor node.Now comes the simulation part, click on the analysis at the top bar of the schematic window and then click on simulate as shown in the figure below,.

If we are interested in checking the voltage on a specific wire in spite of checking it at a node, double click on the wire and inn the window that appear as a result, type the name of the wire you want to label it with, as shown in the figure below,

Change the start and end frequency in the property window according the portion of the graph you want to see.

Pspice 9.1 schematic to design