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"Electronics 101" is a free, easy to use web-based classroom that can help anyone learn all about analog electronics and circuit design. These days, we're surrounded by high-tech
electronic gadgets - why not learn how they work? Why not gain the skills to design your own?
That's what Electronics 101 is all about. These projects have been designed for beginners and have everything you need: Text, diagrams, experiments, exercises, and more. Now, dig in and become an expert!
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Dusk-to-Dawn Light
In this project, we'll create an automatic lighting system. We'll use a device called a "photocell" to turn a light on automatically when the room goes dark, and back off when the sunlight returns. You'll learn about:
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- DC Power Supplies and Voltmeters
- Resistors and Ohm's Law
- Voltage Dividers
- Dependent Sources and Transistors
- Light Emitting Diodes
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Time-Varying Signals
In this project, you will learn how signals that change over time can carry information from one place to another. You'll learn about:
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- Sinusoidal signals
- Sinusoidal sweeps
- Amplitude and frequency modulation
- Custom signals
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Intrusion Detection
In this project, we'll detect when a mechanical system, such as a door or window, is moved or displaced. Then, we'll use that info to sound an alarm. You'll learn about:
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- Basic oscilloscope usage
- Time scaling
- Amplitude scaling
- Triggering
- Math channel
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