The name of transistor comes from the union of transfer and resistor, that is, a transfer resistor in English. With the arrival of the solid state electronics, that is, of the semiconductors, allowed the creation of this type of devices much cheaper, smaller and more reliable. The heat they generated was another problem as well. They were also large in size and did not allow the creation of small devices. These valves were similar to traditional bulbs, so they could blow out and needed to be replaced frequently. That is, they are the substitutes for the primitive vacuum tubes or vacuum valves that gave so many problems. Transistors are nothing more than devices similar to switches and capable of amplifying the signal. As radio or transistor it was named so because of this device we talked about, I would like to do a very brief introduction on what a transistor is and a little history.
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