Las placas de Arduino tienen una capacidad limitada. Aunque cada salida puede proporcionar una buena corriente, muchos relés o cargas que se utiliza podrán causar problemas de calefacción del microcontrolador. Otro problema radica en el hecho de que no tenemos un relé de 5 V o 3.3 V y deseamos utilizar un relé de voltaje más alto. Una posibilidad para ahorrar energía del microcontrolador es utilizar shields separados de relés que pueden tener alimentación independiente de 12 V. Este circuito demuestra cómo esto es posible. Con este circuito puede controlar relés de 100 mA o más de corriente de bobina con tensiones de 6 a 12 V mediante la aplicación de una corriente de entrada de sólo 5 µA. El circuito también controlar grandes cargas con el intercambio de Q2 para un BD135 caso en que la corriente máxima puede alcanzar 500 mA con el accionamiento de solenoides y motores directamente. El circuito puede ser alimentado por tensiones de 6 a 12 V. Finalmente el resistor de 1M5 resistencia debe reducirse si se comprueba que falta gaño para el circuito.

Shield de Accionamiento de Relé
Shield de Accionamiento de Relé

 

 

18.837MBMemory Usage43.82msRequest Duration
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