Part 02 - Phasors and AC-Steady State (ELEC 202)
Video: https://youtu.be/quISAt6TQbI?si=4wSOHfl6T_q5-9Iw
#Physics #Engineering #Electrical_Engineering #AC_Circuits #Complex_Analysis
Table of Contents:
A) Introduction to Phasors and AC Steady State
A.1) DC Steady State
Previously we had mastered the solutions of circuits in DC steady State (DCSS).
For example,
DC Steady State (DCSS) definition:
A circuit where all sources are constant,
and when no switch has been opened or closed in a long time,
is in DC steady State (DCSS).
Note: Some Types of Switches,
Remember...
In DC steady State (DCSS), all voltages and all currents are constant.
A.2) AC Steady State
Now, we will study circuits in AC steady State (ACSS).
For example,
ACSS definition:
When all the sources in a circuit are sinusoidal functions of time with THE SAME FREQUENCY,
and no switch has been touched in a long time,
the circuit is in AC steady State (ACSS).
In AC steady State (ACSS), all voltages and all currents are sinusoidal functions of time OF THE SAME FREQUENCY AS THE SOURCES.
Even though these sinusoidal functions of time have the same frequency, they are not necessarily aligned in time. Inductance and capacitance can cause the voltage and current to lead or lag each other in an AC steady-state circuit.
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