Designing digital AC Wattmeter using Microcontroller

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Suvodeep

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Hi All,

I want to design a digital RMS wattmeter using atmega/PIC microcontroller which needs to be operated at a range of 210-230 Volts. The output needs to be displayed in 7 segment LEDs.
If anyone has already worked on this kind of project, then please help me out to design an accurate circuit and program a suitable microcontroller with the LEDs. Sample source code for microcontroller would be helpful.
Please help.

Thanks.
 

I think the point of your homework was to teach you how to design a circuit, not teach how to ask somebody else to design a circuit for you. That would be a business class, not an engineering class.
 

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