Intro to Electrical Engineering
.ac is a SPICE command used to perform an AC (Alternating Current) analysis in circuit simulators. This analysis allows engineers to determine the frequency response of a circuit by calculating voltages and currents at various frequencies, thereby helping to understand how the circuit behaves when subjected to sinusoidal inputs. The .ac command is essential for evaluating the performance of amplifiers, filters, and other frequency-dependent components in a circuit design.
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