Vocademy Electronics Technology

How audio recording works.

Animation from U.S. Army training video on AC generators.

How motors and generators work. Public domain - the work of an employee or employees of the U.S. government.

Most metals are conductors. Most insulators are glass, ceramic or plastic.

Questions from viewers answered

Grounding circuits should make them more dangerous, but it doesn't. Here's how it works.

Ground is a reference and a current source and sink.

Finalizing the design

Controlling the output current in the event of a short circuit, etc. Learn electronics technology for free at vocademy.net.

Any circuit can be analyzed as a voltage and a resistor in series. Learn electronics technology for free at vocademy.net.

Adding a precision regulator to the linear power supply. Learn electronics technology for free at vocademy.net.

Adding a regulator to the linear power supply. Learn electronics technology for free at vocademy.net.

The second stage of a linear power supply is the rectifier followed by the third stage, the filter. Learn electronics technology for free at vocademy.net.

The first stage of a linear power supply is the transformer. Here is a close look at it.

A battery acts like a pump, pumping electricity around a circuit. Learn electronics technology for free at vocademy.net.

Zero volts is not the absence of voltage. Learn electronics technology for free at vocademy.net.

Voltage is always a differential and zero volts is not the absence of voltage. Learn electronics technology for free at vocademy.net.

Voltage is always a differential. Learn electronics technology for free at vocademy.net.

Questions and answers about electrical circuits. Learn electronics technology for free at vocademy.net.

A battery acts like a pump, pushing electricity around a circuit much like a pump pushing a coolant around a cooling circuit. Learn electronics technology for free at vocademy.net.

Here are the fundamentals of electricity presented in a way everyone can understand. Learn electronics technology for free at vocademy.net.

From ancient lamps to modern computers.

Small signal amplifiers using bipolar junction transistors. Learn electronics technology for free at vocademy.net.

Welcome to Vocademy, a free online vocational school where you can learn electronics technology, and other subjects. Prepare to become a certified electronics technician, get a head start in your studies in electrical engineering, or just learn for your personal improvement. Go to vocademy.net and start today.