Hello all, I want to measure AC voltage from mains electrical cables, 100-220V AC voltages.
For this measurement, I will use I/O pins of a microcontroller or an ADC. So the measurement will be around 0-5V.(or 0-3V) Besides, I do not need any LCD panel to show the data, as the data will be sent to another microcontroller to be processed.
Do I need only a voltage divider or a DC/DC converter to convert 220V to 5V? I am not in favor of converters as the circuit should be compact to fit in the circuit box.
For current measurement, there are current sensors but no voltage sensors for voltage measurement. I only need a circuit to measure 0-220V like voltmeter and without the LCD panel.
I also need an accuracy of %1 maximum. Do you have any recommendations?
Thanks in advance.
For this measurement, I will use I/O pins of a microcontroller or an ADC. So the measurement will be around 0-5V.(or 0-3V) Besides, I do not need any LCD panel to show the data, as the data will be sent to another microcontroller to be processed.
Do I need only a voltage divider or a DC/DC converter to convert 220V to 5V? I am not in favor of converters as the circuit should be compact to fit in the circuit box.
For current measurement, there are current sensors but no voltage sensors for voltage measurement. I only need a circuit to measure 0-220V like voltmeter and without the LCD panel.
I also need an accuracy of %1 maximum. Do you have any recommendations?
Thanks in advance.