Transistors
The transistor is a solid state semiconductor device used for amplification and
switching, and has three terminals. A small current or voltage applied to one terminal
controls the current through the other two, hence the term transistor; a voltage- or
current-controlled resistor. It is the key component in all modern electronics. In digital
circuits, transistors are used as very fast electrical switches, and arrangements of
transistors can function as logic gates, RAM-type memory and other devices. In analog
circuits, transistors are essentially used as amplifiers.
The transistor is a solid state semiconductor device used for amplification and
switching, and has three terminals. A small current or voltage applied to one terminal
controls the current through the other two, hence the term transistor; a voltage- or
current-controlled resistor. It is the key component in all modern electronics. In digital
circuits, transistors are used as very fast electrical switches, and arrangements of
transistors can function as logic gates, RAM-type memory and other devices. In analog
circuits, transistors are essentially used as amplifiers.
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