Abstract

The transistor has ranking in 20th century technology. It is finding the application in all electronic devices as radios, computers. Integrated circuits are containing various transistors, which are made by silicon. The transistors are used to handle large current and/or large voltages. As example, the final audio stage in the stereo system used a power transistors amplifier to drive the various speakers. Transistors are device, which are utilizes a change in current to produce a large change in voltage, current, or power.

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