Oscilador por desplazamiento de fase (ALM208S)

Written by: Newton C. Braga
Category: Banco de Informaciones - Almanaque

 

En este tipo de oscilador tenemos un elemento activo (amplificador) y una red de realimentación formada por resistores y capacitores conforme muestra la figura 1.


 

 

 

 

Cada par RC es responsable de un desplazamiento de fase de 60 grados en la señal. Así con tres pares RC, el desplazamiento de fase es de 180 grados. Obtenemos una inversión de fase, factor fundamental para mantener las oscilaciones.

La frecuencia es determinada por la constante de tiempo RC del circuito de realimentación y las señales generadas son senoidales en un rango de frecuencias que va de algunos hertz hasta algunas decenas de kilohercios. Encontramos este tipo de oscilador en la generación de señales de audio y efectos en pedales, sirenas y otras aplicaciones similares.

 

 

Buscador de Datasheets


N° de Componente 

Banco de Circuitos

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