Current derivative sensor

   
   

A system and method for detecting, measuring, and reporting a time derivate of a current signal (di/dt). A sensing element detects current from a load. The sensing element includes an inductor. The inductor is located in series with the load and includes associated parasitic resistance. A differential potential develops across the inductor and the parasitic resistance. The differential potential is amplified and converted to a single-ended value. The single-ended value is then fed to an analog to digital converter that provides an output representative of di/dt.

Un sistema y un método para detectar, medir, y divulgar un derivado del tiempo de una señal actual (di/dt). Un elemento de detección detecta la corriente de una carga. El elemento de detección incluye un inductor. El inductor está situado en serie con la carga e incluye resistencia parásita asociada. Un potencial diferenciado se convierte a través del inductor y de la resistencia parásita. El potencial diferenciado se amplifica y se convierte a un valor single-ended. El valor single-ended entonces se alimenta a el convertidor a digital análogo que proporciona un representante de la salida de di/dt.

 
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