Electronic Components

Learn about electronic components in our online tutorials: resistors, capacitors, inductors, transistors, integrated circuit . . . and even vacuum tubes / thermionic valves.

There are many components that can be used in electronic and radio circuits. For each type there are variants and these may enable them to be used in different ways.

Passive components

Learn about electronics online with our tutorials about passive components: resistors, capacitors, inducators, crystals and many more.

Semiconductor fundamentals

Semiconductor technology is at the core of today's electronics revolution. Check out these online tutorials that cover the basics of the technology.


Active devices: transistor, FET, Vacuum tube / valve, thyristor . .

Semiconductor memory




There is a huge variety of different types of connector. These range from those used for patch panels, through multiway connectors, to RF coax cable connectors. Each type has its own advantages and disadvantages and can be used in a variety of differnet applications.

Battery technology

Batteries of all sorts are used in all forms of electrical and electronic equipment. From children's toys to smartphones, laptops and gadgets right up to electric vehicles.

- Heatsinks - tutorials with some simple thermal calculation examples.