Explore how the same electrical signal can be represented in both the time domain and frequency domain. Learn how a collection of simple sinusoids with different frequencies, amplitudes, and phases can combine together to create complex signals.
- From a simple sine wave or square wave…to the complex signal representing my voice right now,…every single signal can be broken down into a collection…of sinusoids with different frequencies, amplitudes,…and phases.…When we view an electrical signal on an oscilloscope…we usually view it as a voltage changing over time.…This is called the time domain,…because it shows how the amplitude of that signal…changes over time.…This time domain view, amplitude is represented…on the vertical axis and time progresses from left to right…along the horizontal axis.…
That signal can be converted from the time domain…into another representation called the frequency domain.…Using a mathematical operator called the Fourier transform,…which is named after a French mathematician.…The Fourier Transform decomposes a time based signal…into the individual frequencies that make it up.…When we view a signal in the frequency domain…the vertical axis represents the magnitudes of the…individual sinusoids that make up a signal…at different frequencies along the horizontal axis.…
- Reading electrical schematics
- Building circuits on breadboards
- Reviewing types of static and variable resistors
- Reading resistor color codes
- Measuring resistance with a DMM
- Measuring resistive sensors with an Arduino microcontroller
- Making electrical signal measurements with an oscilloscope
- Measuring AC voltage with a DMM
- Understanding the time domain and frequency domain
- Designing passive low-pass and high-pass filters
- Reviewing reactive RC and RL circuits
- The relationship between capacitors and inductors
Skill Level Beginner
Learning to use MakerBot 3D Printerswith Kacie Hultgren1h 5m Appropriate for all
Learning Arduino: Pulse Width Modulationwith Rae Hoyt1h 16m Intermediate
1. Building Circuits
Read electrical schematics6m 25s
3. Resistive Circuits
4. Oscilloscope Measurements
6. Alternating Current
7. Electrical Signals
8. Reactive Circuits
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