Hi I'm looking for some help with measuring AC voltage with an Arduino. The normal home voltage here in the USA is 120vac RMS. I'm looking to build a voltage divider the highest voltage would be 156vac (rms) would provide an output of the divider of = 5vdc on analog input pin. The low end 84vac (rm…

measuring AC voltage with an analog input pin.

LarryD April 28, 2014, 10:09pm 2

Why not use a transformer, for example 120vac to 12 vac, then rectify and apply to a divider?

Topic		Replies	Views
How to Sense Voltage ( AC Main Line ) using arduino ? Sensors	7	14975	May 6, 2021
AC voltmeter Sensors	9	3987	May 6, 2021
AC voltage measuring using arduino General Guidance	22	15635	May 5, 2021
Measureing AC voltage in the range 0-260 VAC Motors, Mechanics, Power and CNC	12	17159	May 6, 2021
AC Volatge divident General Guidance	4	663	May 5, 2021