Dado que el relé es capaz de controlar un circuito de salida de mayor potencia que el de entrada, puede considerarse, en un amplio sentido, como un amplificador eléctrico. Como tal se emplearon en telegrafía, haciendo la función de repetidores que generaban una nueva señal con corriente procedente de pilas locales a partir de la señal débil recibida por la línea.
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EN INGLES:
The relay or relay is an electromechanical device. Functions as a switch controlled by an electrical circuit in which, by means of a coil and an electromagnet, a game is operated one or more contacts which allow to open or close other independent electrical circuits. It was invented by Joseph Henry in 1835.
Since the relay is able to control an output circuit of higher power than the input, can be considered in a broad sense as a power amplifier. As such were used in telegraphy, making the function of repeaters that a new signal generated with local battery current coming from the weak signal received by the line.
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EN INGLES:
The relay or relay is an electromechanical device. Functions as a switch controlled by an electrical circuit in which, by means of a coil and an electromagnet, a game is operated one or more contacts which allow to open or close other independent electrical circuits. It was invented by Joseph Henry in 1835.
Since the relay is able to control an output circuit of higher power than the input, can be considered in a broad sense as a power amplifier. As such were used in telegraphy, making the function of repeaters that a new signal generated with local battery current coming from the weak signal received by the line.
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