venkates2218
Full Member level 6
To measure VAC Voltages.
In that there are three points.
1.Phase with 230VAC
2.Neutral
3.Supply 2(VAC).Vary from 0VAC to 5 VAC.
The Neutral wire is connected to GND of MCU’s(PIC16F877A) power supply for reference.Phase wire connected to AN0 by resistor network and by adding diode and Supply 2 connected to AN1 by adding diode.While running the ADC code the voltage of phase and Supply 2 are measured correctly by neutral as reference.
My doubt is how to measure the voltage between Phase and Supply 2..?
In that there are three points.
1.Phase with 230VAC
2.Neutral
3.Supply 2(VAC).Vary from 0VAC to 5 VAC.
The Neutral wire is connected to GND of MCU’s(PIC16F877A) power supply for reference.Phase wire connected to AN0 by resistor network and by adding diode and Supply 2 connected to AN1 by adding diode.While running the ADC code the voltage of phase and Supply 2 are measured correctly by neutral as reference.
My doubt is how to measure the voltage between Phase and Supply 2..?