0v to 100v AC VOltmeter Using PIC Microcontroller

[bilal shareef]

Hi ,
I am tring to make the AC VOltmeter of range 0 to 100v RMS. Please help me how can i make it ? I

 

[milan.rajik]

https://www.edaboard.com/threads/304920/#post1305244

 

[bilal shareef]

I am using PIC16f877a and i want to convert the 0 to 100v AC to some proportional DC of 0 to 5V range. Can anybody help me in this conversion circuit. ????

 

[milan.rajik]

Google for "transformerless power supply" or "transformerless power supply 12V". You will get a lot of circuits. Use a voltage divider to drop the 12V DC to 5V DC.