Some microcontroller vendors have one app. note or reference design with this subject...
Atmel: http://www.atmel.com/dyn/products/app_notes.asp?family_id=607
AVR465: Energy Meter (40 pages, revision A, updated 07/04)
This application note describes a single-phase power/energy meter with tamper logic. The design measures active power, voltage, and current in a single-phase distribution environment. The meter is able to detect, signal, and continue to measure reliably even when subject to external attempts of tampering.
hi gorkin,
Thankyou so much....
and i have one more question...
i want 2 know working of kilowatt-hour meter....by using analog components
what we r using in home...
plz suggest me any web site...
thankyou....
amulya
Now I understanding Your question! Well, electrical mechanicals watt hour meters using in essence, the efect of electromagnetic field over one surface...
For reference of how working, I think better You read more about electrical instrumments...In old past, in my undergraduate electrical engineer course, I read one book about this...I will see in my home library and post the book for You!