Se puede utilizar un regulador de tensión de 3 terminales como un regulador de temperatura eficiente para un elemento calefactor resistivo de corriente de hasta 3 A, como se muestra en el circuito de la figura. El sensor es un transistor NPN común de cualquier tipo que debe montarse en contacto con el elemento calefactor. Evidentemente, la temperatura de este elemento no debe exceder aproximadamente los 100 ºC, ya que por encima de eso los transistores utilizados como sensor pueden resultar dañados. La resistencia puede tener su valor cambiado dependiendo de la temperatura deseada y el voltaje de entrada debe ser adecuado para el sensor utilizado. El circuito integrado del regulador admite equivalente al LM317 si el elemento tiene una corriente inferior a 1,5 A, y debe montarse siempre sobre un radiador de calor. El mismo circuito se puede modificar para controlar el brillo de una lámpara incandescente, en cuyo caso el transistor utilizado como sensor de temperatura debe ser reemplazado por un fototransistor.

 

Regulador de temperatura
Regulador de temperatura

 

 

 

18.837MBMemory Usage53.36msRequest Duration
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