When the transistor is being used as an amplifier, it takes an electric current and amplifies it. How a transistor works depends on whether it is being used in a transistor amplifier circuit or switch circuit. Transistors are used in everything from pacemakers, cameras, calculators, watches, hearing aids, and computers. This makes them incredibly useful for a whole host of applications. They will either block a current or let electricity pass through.Įach second, transistors turn currents on and off far faster than any human. Instead of a traditional flip switch, a transistor uses voltages to switch the circuit on and off. Transistors are unique in that they allow you to control how much current goes through a circuit. Rather than manually turning circuits on and off, a transistor will automate this process. However, this requires human interaction.
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