Tag Archives: OrCAD PSPICE

OrCAD PSPICE – Frequency Response of the Amplifier

sweep on this profile

Frequency Response of the Amplifier:   1. Create a new simulation profile called for the circuit called “Frequency Response.” Inherit this profile from the base profile “steadystate.” 2. Do an AC sweep on this profile as follows: 3. Recall that the VSIN component is a dual-purpose signal source – it …

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OrCAD PSPICE – Compliance Evaluation

simulation profile

Compliance Evaluation:   To perform a compliance test of an amplifier, we gradually increase the input signal amplitude until clipping is observed at the amplifier output. We can “sweep” the VSIN amplitude in our circuit to achieve this. 1. Create a new simulation profile called “Compliance Test.” Inherit the profile …

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OrCAD PSPICE – DC Parametric Sweeps

simulation profile

DC Parametric Sweeps:   It is also possible to vary the parameters in a DC-swept fashion. Common examples of parameters that can be varied include resistance, capacitance, transistor Beta, and so on. A good example of this is to demonstrate the maximum power transfer theorem, where the  load resistance of …

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OrCAD PSPICE – AC Parametric Sweeps

dBV units

AC Parametric Sweeps:   In order to learn about the frequency response of circuits, an AC parametric sweep can be performed. This is a different type of analysis than transient analysis as far as PSPICE is concerned, because instead of calculating the instantaneous values for voltages and currents, PSPICE instead …

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OrCAD PSPICE – Transient Analysis

Transient Analysis

Transient Analysis   In PSPICE, the transient analysis option is used to do both steady and transient analysis of circuits. This can involve both AC and DC signal sources. Steady-state AC time-domain results are obtained by the same setup as for transient analysis. Let’s try it out. 1. Start a …

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OrCAD PSPICE – Debugging PSPICE Simulation Errors

Debugging PSPICE Simulation

Debugging PSPICE Simulation Errors Sooner or later (probably sooner), you’ll get a nasty error message from the simulator. Because this program uses a PSPICE core to do the actual work, you need to be able to locate and decipher the actual error within the OUTPUT file, then correct it in …

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Introduction to OrCAD PSPICE

Introduction to OrCAD PSPICE

Introduction to OrCAD PSPICE PSPICE Rules: 1. All circuits must have a reference node. In PSPICE, this node is usually marked with the number “0.”  Note: The conventional OrCAD ground symbol is not appropriate for PSPICE simulation. 2. All component leads must be connected. Unconnected wires and leads will cause …

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