What does transistor mean in electronics?

What does transistor mean in electronics?

Solid-state electronic devices are closely related to our daily lives. The transistor, invented by Bell Laboratories in 1947, was put on the market in the 1960s and was the first solid-state device to enter the commercial field. Solid-state electronic devices have replaced electron tubes in almost all electronic devices. Currently, only radio station transmitters, many guitar amplifiers and some high-fidelity audio equipment still use electron tubes. Electron tubes can burn out and break, which is the opposite of "transistors".

One of the earliest devices to use a transistor was the solid-state radio. In a transistor radio, metal wires on the surface of the crystal separate the lower frequency audio from the higher frequency transmitted radio carrier. This form of signal detection is possible thanks to the crystal's property of allowing current to flow in only one direction.

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Starting from the top and looking clockwise, they are:

• 2.5 cm long integrated circuit chip
• Red LED
• transistor

The word transistor comes from the fact that the electronic signal is passed through a solid piece of semiconductor material. Before devices using crystals (such as the common transistor), the current passed through various components inside the electron tube to heat it, while devices using crystals (transistors) use conductors to control the flow of signals in the circuit.

• In a transistor amplifier, a small change in the amplitude of the input signal is immediately reflected in the larger amplitude of the output signal within the transistor.
• In a tube amplifier, after the tube is heated, the signal acts on the grid of the tube, and the output signal of the same frequency obtains a larger amplitude.

The structure of the transistor is similar to a sandwich. At a lower DC voltage, the emitter, base, and collector perform similar tasks without the need for "preheating." In digital circuits, the integrated circuit chip is a collection of individual transistors and metal wires.

A device called a diode that uses a crystal has replaced the rectifier tube used to convert alternating current (AC) to direct current (DC). Light-emitting diodes (LEDs), which generate very little heat, are another device used as indicator lights on the front panels of computers and monitors, replacing the earlier incandescent light bulbs. Groups of bright LEDs can also be used as third taillights and signal lights on vehicles.