Beginner
4 lessons
130 min
Electrical Components
Learn what the common components do, how their value is marked, how they behave in DC and AC circuits, and how to test them without damaging the circuit or the meter.
Course progress
0 / 4 lessons · 0%
Progress is stored in this browser session. Sign in to keep it with your account.
What you will learn
- Decode a resistor value and tolerance and choose a suitable power rating
- Describe how capacitors and inductors store energy and behave in DC and AC
- Explain the function of a diode, a bipolar transistor and a MOSFET
- Test a relay coil and contacts and explain the purpose of a flyback diode
Prerequisites. Voltage, current, resistance and Ohm’s law · Basic series and parallel resistance calculations · A multimeter and a safe low-voltage practice circuit
Advertisement
Course lessons
1
Resistors and Colour Codes
Fixed and variable resistors, the four-band colour code, tolerance, power rating and practical value selection...
30 min →
2
Capacitors and Inductors
Energy storage in an electric field and a magnetic field, the formulas that describe each, and their complemen...
35 min →
3
Diodes and Transistors
One-way conduction, rectification, LED current limiting and the transistor as an electrically controlled switc...
35 min →
4
Relays and Switching Devices
Electromagnetic relays, contactors and solid-state switches, including coil drive, contact ratings and inducti...
30 min →