Electronics — three ways to learn it.

The complete written lesson — intrinsic and extrinsic semiconductors, n-type and p-type doping, the p–n junction diode in forward and reverse bias, half- and full-wave rectification, the transistor as amplifier and switch, and the basic logic gates.

As you scroll, a live animated panel brings every idea to life: electrons and holes drift across a p–n junction, the diode conducts only one way, an AC wave is rectified to DC, and logic gates flip their outputs as you toggle the inputs.

Trace the I–V characteristic of a p–n junction diode on a safe, virtual bench — bias it forward and reverse, read the current at each voltage and plot the diode characteristic curve.