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This electronics video tutorial provides a basic introduction into potentiometers which are variable resistors. These devices have application in voltage divider circuits, volume control in speakers and brightness control for light bulbs and LED circuits.

What Is a Diode?


Full-Wave Bridge Rectifiers:


Voltage Multiplier Circuit:


Light Emitting Diodes:


Power Dissipation In LEDs & Diodes:


LED Resistor Value:


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LED Dimmer Circuit:


Thermistors - Temperature Sensors:


Zener Diodes:


Voltage Regulators - Zener Diodes:


Zener Diode Solar Cell:


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Power Zener Diodes - Voltage Regulation:


12V LED Battery Level Indicator:


Reverse Polarity Circuit Protection:


High Voltage Surge Protection Circuit:


AC DC Polarity Tester Circuit:


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DC to AC Reverse Polarity Circuit:


Varactor Diodes - Voltage Capacitors:


Final Exams and Video Playlists:


Full-Length Videos and Worksheets:

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Potentiometers:

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