Transistors, Diodes, etc.

Transistors

Transistors are three termainal devices where one terminal controls the power through the other two.

Transistors Bipolar

Bipolar transistors are basically current controlled devices. The collector current is some multiple of the controlling base current. Ignoring the current gain a transistor acts like two diodes connected to a common terminal. This is useful in sorting out transistor leads with an ohmmeter. Two general classes of bipolar transistors are NPN and PNP.

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Transistor Components

Transistors FET MOSFET

Bipolar transistors are basically voltage controlled devices. The current is controlled by the voltage at the gate.

Transistors Transdiode

This is a connection of a transistor to use it as a diode.

Diodes

Diodes are two terminal devices that conduct very differently in one direction verses another. The most basic are used because they conduct well in one direction, and very poorly in the other.

Not General

Reverse Protection Diodes - PTH and SMD diodes to protect against reverse polarization.