My application requires measuring AC currents of few 10s Amperes.
I am using a CT and a 5 ohm resistor for converting current to proportional voltage.
Now, in software part,
Instead of taking a no. of ADC samples and finding the average current, could I just put in a diode and a Capacitor, such that the capacitor will hold the peak voltage. I will take just 1 ADC reading once in a while to find the peak voltage, and from it estimate the Average or the RMS current.
What practical problems do you see in this?
and what workarounds do you purpose?
the measurement needn't be precise, but it shouldn't be orders of magnitude off.
I am using a CT and a 5 ohm resistor for converting current to proportional voltage.
Now, in software part,
Instead of taking a no. of ADC samples and finding the average current, could I just put in a diode and a Capacitor, such that the capacitor will hold the peak voltage. I will take just 1 ADC reading once in a while to find the peak voltage, and from it estimate the Average or the RMS current.
What practical problems do you see in this?
and what workarounds do you purpose?
the measurement needn't be precise, but it shouldn't be orders of magnitude off.