Understand
Connect the component’s purpose to what the circuit is doing.
Electronics from a technician’s point of viewUnderstand the circuit.
Understand the circuit.
Find the fault.
Learn what components do, how circuits behave, and what your measurements are telling you.
Free public lessons. No student account required.
Every reading tells part of the story.
Measure
Think about the reading you expect before reaching for the meter.
Troubleshoot
Use observations to narrow down a fault, one useful check at a time.
At the bench
View course contents →Start with a lesson
Getting started
Understanding Voltage, Current, and Resistance
To begin understanding electronics, you need to understand what voltage, current, and resistance are. You also need to have a clear understanding of how they relate to each other.
Open lesson →Getting startedUnderstanding schematics
A schematic is a drawing that simplifies the physical circuit so that it is easier to understand.
Open lesson →