A tutorial on electrical power and watts. A practical example of light bulb power measurement is shown as well as a demo on how to calculate appropriate resistor sizes.

This video shows you the basics of op amps and has an example circuit where you can build an amplifier to take a tiny microphone signal and amplify it to be audible on earbuds.

The basics of oscillators - what they are, what they are used for, and a couple of demo circuits with a sine wave oscillator and a square wave oscillator.

Have you ever wondered how your phone’s tilt sensing function works? It uses a device called an accelerometer.

What is voltage and what does it do? Learn about volts, coulombs, joules, power supplies and more in this video.

Switch mode power supplies are a more efficient way to regulate voltage than linear regulators. This video explains buck converters, which are a type of switch mode power supply used to step down voltage. It also shows how to build a 5V 5A power supply using an LM2678.

How to charge a single cell lithium ion or lithium polymer battery with an adjustable, current limiting bench power supply.

A tutorial covering the advantages and disadvantages of schottky diodes over regular silicon diodes including forward voltage, efficiency, leakage current and recovery time issues.

A tutorial on zener diodes and how to use them as voltage clamps, voltage regulators, and how to create audio distortion circuits.

Did you know you can use an LED as a light sensor? This video shows how to use this phenomenon to build a laser tachometer capable of measuring the RPM of mechanical devices.