Encontramos este circuito simple en una publicación inglesa denominada Electronic Circuit Design en el 3 de la primavera de 1980. El circuito puede controlar cargas como lámparas incandescentes y elementos de calentamiento con potencia máxima que depende del Triac. El circuito posee una interesante red de descarga del capacitor al final del ciclo de carga y disparo para mejorar el rendimiento. En este circuito no se conecta un resistor limitador para el final del recorrido del potenciómetro. Así, como mejora de este circuito recomendamos usar un potenciómetro de 470k (220k en la red de 110, pues este circuito es para la red de 220 V) en serie con un resistor de 10k. Los diodos son todos 1N4004 o 1N4007 y L1 se enrolla en un bastón de ferrita que consiste en aproximadamente 20 espiras de hilo grueso, de acuerdo con la carga. El triac puede ser cualquiera de la serie TIC según la carga alimentada. El circuito funciona tanto en la red de 110 V como 220 V.

 


 

 

 

 

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