MARWEN007
Junior Member level 2

hello, I want something conprendre conserne measuring an AC voltage is 400 V was based 16F877 then I'll post it on an LCD, after a little research on net I found this formula it wa
**broken link removed**
with
N: number of samples
Ui: sample value i.
good I want someone to explain a bit with knowledge in electronics
This formula is used to measure the effective value of a variable voltage or not??
whether the value measured by this formula is not the real value of tension is what I will multiply rapprort division transformer bridge and go to the pure real value?
Please can someone explain to me one!
**broken link removed**
with
N: number of samples
Ui: sample value i.
good I want someone to explain a bit with knowledge in electronics
This formula is used to measure the effective value of a variable voltage or not??
whether the value measured by this formula is not the real value of tension is what I will multiply rapprort division transformer bridge and go to the pure real value?
Please can someone explain to me one!