PSPICE BASICS

Written by Kashif Ahmed

                                   The name is an acronym for Personal Simulation Program with Integrated Circuit Emphasis.

                                It  is a SPICE  analog circuit  and digital logic  simulation software that runs on computers.

Developed By :-

                                It was developed by MicroSim.

Uses :-

              It is used in electronic  design  automation.  PSpice  is  a very powerful  tool  that  can  both  quickly and accurately simulate and analyze the circuits. By using a computer simulation a circuit can be easily tested and optimized without actually building it.

Available Elements:-

                                         SPICE is a general purpose analog circuit simulation programming language that performs non-linear  DC,  transient  and  linear  steady state  AC  analysis.  Linear  circuit  elements  of resistance, capacitance, inductance, independent and dependant current and voltage sources are modeled. Four of the most common nonlinear semiconductor devices (diodes, BJT’s, FET’s and MOSFETs) and many other useful circuit relationships including transmission lines and mutual inductance are also modelled.

1. Getting Started With :-

a) To start PSpice, click: Start > Programs > DesignLabEval8 > Design Manager.

b) Click on the Run Schematic icon given at the top of the toolbar on the left side of the design manager window.

OR:

To start PSpice, click: Start > Programs > DesignLabEval8 > Schematics.

In both cases a window as shown on next page will open:

Now you are ready to draw the desired circuit.

2.     Draw Schematics:-

                                                   To draw the circuit you need the components such as voltage source, resistor, GND (ground), etc and connecting wires.

1.      Get New Part :

·    Select the desire components from Draw > Get New Part.

OR: click the icon for Get New Part.

·           A window as shown below will open. In PART NAME, write the name of component, click PLACE and click on the dotted white space to place the component.

·    Repeat the previous step until all the necessary parts are placed and then click CLOSE.

·  To connect the components connecting wires are to be drawn. For that, click Draw > Wire.

OR: click the icon for wire.

2.      Edit Reference Designator or Value of a Component:

·              To edit the reference designator or value of any component click on its designator/value and the respective window  will open as shown on the next page:

3.     Saving File :

·     After completing the construction of the circuit, save it.

4.       Analysis:

·       Click Analysis > Electrical Rule Check to check your result.

·   A window as shown below will open. It will indicate if there is any error in the circuit.

5.       Run The Simulation:

Now, the final step is to simulate the circuit in order to know the voltages and currents across different components.

·   Before simulating the circuit, the two icons with “V” and “I” written must be selected, as shown below:

·   Now the circuit is ready to be simulated. For this purpose click Analysis > Simulation.

OR: click the icon for simulation.

·  After simulation the voltages and currents will be displayed as shown on the next page: