Semiconductors

Diodes, transistors and the devices built from them.

Semiconductor basicsDoping, P-N junctions and how they conduct.DiodesRectifier, zener, Schottky, varactor, PIN and LED.Bipolar transistorsA small base current controlling a big collector current.FETs and MOSFETsVoltage-controlled devices for switching and RF.Integrated circuitsAnalog, digital and RF chips.Operational amplifiersThe building block of gain, filters and comparators.OptoelectronicsLEDs, photodiodes, solar cells and optoisolators.Vacuum tubesTriodes to beam tetrodes, and why they still power amplifiers.