Free online courseAdvanced electronics

Course Description

Take your electrical know-how beyond basic wiring and gain confidence working with the electronic components you meet in modern systems. This free online course helps you build a practical understanding of solid-state devices so you can diagnose faults faster, measure more accurately, and make smarter repair decisions on real equipment.

You will connect key concepts to hands-on technician thinking: how junction diodes are formed, what forward bias really means in practice, and why different materials change typical voltage behavior. You will also learn what kinds of stress and misuse can permanently alter a diode’s characteristics, giving you insight into common failure modes you may see in the field.

Measurement skills matter as much as theory, so the course clarifies the real differences between resistance checks made with an analog meter versus a digital multimeter, and what those differences imply when you are testing components in or out of circuit. From there, you move into the devices that power switching and amplification across everything from control boards to automotive and industrial electronics. You will understand what a transistor does, how to identify its leads, and what voltage to expect across critical junctions so your tests have clear pass/fail meaning.

The learning is reinforced with scenario-style questions, including a troubleshooting story tied to an alternator failure, designed to sharpen your ability to reason from symptoms to root cause. You will also explore why field effect transistors became such a milestone in electronics, then build practical awareness of JFET behavior and MOSFET testing priorities, including what you must determine first before drawing conclusions.

By the end, you will be better prepared to interpret meter readings, protect sensitive components, and approach electronics faults methodically. It is a focused step forward for electricians and technicians who want stronger professional skills in diagnostics and modern electronic systems.