Electrical Circuits Lecture Notes

These flashcards cover key concepts related to electrical circuits from the lecture notes, including definitions and characteristics of various circuit elements and behaviors.

First-Order Circuit

A circuit with a single energy storage element, like an inductor or capacitor.

Natural Response

Voltages and currents in a circuit when independent sources are removed and energy stored is released.

Time Constant (τ) for RL Circuit

The equivalent inductance divided by the Thévenin resistance.

Time Constant (τ) for RC Circuit

The equivalent capacitance multiplied by the Thévenin resistance.

Step Response

The response of a circuit to a step input, showing how the circuit reacts to a sudden change in voltage or current.

Thévenin Equivalent

A way to simplify a complex circuit into a voltage source and series resistance.

Norton Equivalent

A way to simplify a complex circuit into a current source and parallel resistance.

RC Circuit

A circuit containing a resistor and a capacitor.

RL Circuit

A circuit containing a resistor and an inductor.

Passive Filter

A filter that uses passive components such as resistors, capacitors, and inductors.

Active Filter

A filter that uses active components like operational amplifiers along with passive components.

Impedance

The total opposition to current flow in an AC circuit, consisting of resistance and reactance.

Admittance

The measure of how easily a circuit allows current to flow, which is the reciprocal of impedance.

Sinusoidal Steady-State Analysis

Analysis of circuits where the input voltage or current is sinusoidal and steady state is achieved.

Complex Power

Power in AC circuits that includes both real power and reactive power.

Balanced Three-Phase Circuits

Circuits where the three voltages are equal in magnitude and separated by 120 degrees.