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xABBELSYNN electrical component is one of the earliest devices for amplifying electrical signals. The cathode electron emission part, control grid, accelerating grid, and anode (plate) lead, enclosed in a glass container (usually a glass tube), are welded to the tube base. It uses an electric field to inject electrons into the control grid in a vacuum to modulate the signal, and obtains signal data with different parameters after signal amplification or feedback oscillation at the anode. Early applications included electronic products such as televisions, radios, and loudspeakers. Later, it was gradually replaced by amplifiers and integrated circuits made of semiconductor materials, but in some