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HIGH SCHOOL

Engineering

Concept Videos

Electrical Engineering

First and Second-Order Circuits

First-Order Circuits
01:15
First-Order Circuits

Electrical circuits with resistors and a single energy storage element - a capacitor or inductor are called first-order circuits. They are described by a ...

Video Duration: 1 minute and 15 seconds
RC Circuit without Source
01:16
RC Circuit without Source

When a DC source is removed abruptly from an RC circuit, the circuit becomes source-free. Assuming the fully charged capacitor's initial voltage is ...

Video Duration: 1 minute and 16 seconds
RC Circuit with Source
01:15
RC Circuit with Source

When a DC source is applied abruptly to an RC circuit, its voltage is represented as a unit step function. The voltage across the capacitor is the step ...

Video Duration: 1 minute and 15 seconds
RL Circuit without Source
01:14
RL Circuit without Source

When a DC source is suddenly disconnected from an RL circuit, it becomes source-free. Assuming the inductor has an initial current i0, the initial energy ...

Video Duration: 1 minute and 14 seconds
RL Circuit with Source
01:14
RL Circuit with Source

When an RL circuit is connected to a DC source, its complete response is divided into transient and steady-state responses. The transient response is the ...

Video Duration: 1 minute and 14 seconds
Design Example: Frog Muscle Response
01:14
Design Example: Frog Muscle Response

A student uses an RL circuit to study the muscle response of a frog's leg to electrical stimulation. Closing the switch causes a brief muscle ...

Video Duration: 1 minute and 14 seconds
Second-Order Circuits
01:17
Second-Order Circuits

An electrical circuit comprising two irreducible energy storage elements is called a second-order circuit. Some examples include RLC circuits as well as ...

Video Duration: 1 minute and 17 seconds
Series RLC Circuit without Source
01:21
Series RLC Circuit without Source

A source-free RLC circuit a composed of a resistor, an inductor, and a capacitor in series without an external energy source. Here, the initial energy ...

Video Duration: 1 minute and 21 seconds
Types of Responses of Series RLC Circuits
01:11
Types of Responses of Series RLC Circuits

A source-free series RLC circuit is represented by a second-order differential equation. Its complete solution is a linear combination of two distinct ...

Video Duration: 1 minute and 11 seconds
Series RLC Circuit with Source
01:12
Series RLC Circuit with Source

Consider an automobile ignition system that produces high voltage from the battery essential for generating a spark. This system can be modeled as a ...

Video Duration: 1 minute and 12 seconds
Parallel RLC Circuits
01:14
Parallel RLC Circuits

Consider a street lamp with an RLC surge protector to protect its components from sudden voltage spikes. This setup can be approximated by the simplest ...

Video Duration: 1 minute and 14 seconds
Second-order Op Amp Circuits
01:19
Second-order Op Amp Circuits

Consider an audio system that utilizes a second-order low-pass filter to eliminate the undesirable high-frequency noise in the audio signal. This setup ...

Video Duration: 1 minute and 19 seconds
Design Example: Underdamped Parallel RLC Circuit
01:17
Design Example: Underdamped Parallel RLC Circuit

Underdamped parallel RLC circuits can sustain oscillations at a resonant frequency, making them suitable for use in oscillators. An electrical engineer is ...

Video Duration: 1 minute and 17 seconds