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0v to 100v AC VOltmeter Using PIC Microcontroller

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bilal shareef

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

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. ????
 

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.
 

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