Presentamos un comparador con resolución de señales en el rango de los submicrovolts. El par de transistores casados ??es importante para que las características del circuito se mantengan. Hay equivalentes de pares casados ??que se pueden utilizar en esta configuración. El circuito operativo trabaja sin retroalimentación generando una señal compatible con TTL. Los diodos Schottky funcionan como protección contra el overdriving y evitan la saturación del transistor de salida.  El circuito opera con una fuente simétrica de 5 V. En las aplicaciones normales, uno de los terminales de entrada se conecta a tierra de modo que el rechazo en modo común no es el más grande. Sin embargo, la elevada ganancia del OP-50 permite que las diferencias de voltaje del orden de microvolts sean detectadas. El circuito no es de los más rápidos, pero puede detectar diferencias de señales del orden de 0,3 uV. Para obtener transiciones más agudas se puede usar un disparador de Schmitt. En la figura tenemos circuito para esa aplicación.

 


 

 

 

 

18.812MBMemory Usage40.02msRequest Duration
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PHP Version8.3.16
Identityguest
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Templatecassiopeia
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