francisco6329
New Member
Hi, I have a problem I never tried with an AC voltage to the input of an ADC. I learned more information about the sample and hold circuits, which are used to overlay (DC offset) AC waveform on a DC, and so would take the negative cycle for consideration by the ADC.
Vrms = sqrt (Sum (X2 - X) / N)
Where X is the voltage value in a given sample, and N is the number of samples.
Please know how many samples would help me perform, in that time making them, whether this is the right formula, and a possible reference circuit for a 5 V
Vrms = sqrt (Sum (X2 - X) / N)
Where X is the voltage value in a given sample, and N is the number of samples.
Please know how many samples would help me perform, in that time making them, whether this is the right formula, and a possible reference circuit for a 5 V