El circuito que se muestra en la figura utiliza un TRIAC y un SBS para la activación, con un puente de diodos y un acoplador óptico. El puente de diodos hace que las señales del acoplador óptico se apliquen a la puerta del TRIAC, a través del SBS en los dos semiciclos. Por lo tanto, cuando el emisor del acoplador óptico ilumina el fototransistor, la puerta TRIAC está conectada a tierra y no llega ninguna señal de disparo a ese componente. Cuando el fototransistor deja de recibir luz, la señal de disparo para el Triac puede llegar a él a través de SBS y esto conduce a su conducción con la alimentación de carga. También en este caso, el TRIAC tomado como ejemplo es del tipo de corriente de disparo baja. Para TRIAC de mayor corriente, en el orden de 10 mA, la resistencia debe tener su valor reducido. Se pueden experimentar valores entre 10 k ohms y 22 k ohms. Dependiendo de la corriente de disparo del TRIAC, el acoplador debe ser más sensible.

 

Interruptor de potencia normalmente cerrado con optoacoplador
Interruptor de potencia normalmente cerrado con optoacoplador

 

 

 

18.813MBMemory Usage39.91msRequest Duration
Joomla! Version5.2.3
PHP Version8.3.16
Identityguest
Response200
Templatecassiopeia
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Collation
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Conn Collation
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