Circuito para Ecocardiografía

joham34

joham34

Si se quita está etapa, ya se puede realizar?
412 days

flux

0:21

Sí, si retiras la etapa del LM386, el circuito está orientado a adquirir la señal (filtrada y amplificada por el LM358) para su procesamiento digital con el Arduino. Sin embargo, debes considerar los siguientes puntos:
  1. Salida de la Señal:
    • La señal que obtendrás será la del bloque de filtrado y amplificación (hasta el Nodo V3). Esta señal puede tener la ganancia establecida para deteccionar sonidos, pero no estará acondicionada para reproducción audible, ya que la etapa del LM386 se añadió justamente para un amplificado audible.
  2. Acondicionamiento para el ADC:
    • La señal que llega al Arduino debe estar dentro del rango aceptable (generalmente 0–5 V) y, habitualmente, se requiere un desplazamiento DC (nivel medio) para que el ADC pueda muestrearla correctamente.
    • Es posible que necesites un circuito de nivel shifting para centrar la señal en, por ejemplo, 2.5 V y un divisor o atenuador si la amplitud llega a exceder el rango del ADC.
En resumen, al retirar la etapa de audio (LM386), el circuito puede utilizarse para captar y digitalizar la señal del sensor, pero deberás asegurarte de que la señal esté adecuadamente condicionada para la entrada analógica del Arduino. Esto es viable si tu objetivo es analizar o visualizar la señal en lugar de escucharla directamente.
ADC conditioning
Safeguard ADC input
ADC input check
412 days
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Breezy Chocolate Antigravity Battle Room

Breezy Chocolate Antigravity Battle Room
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joham34

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