dave plater pliprbcbyjigmailcom carlos e r wrote sunday 20080217 1509 0800 randall r schulz wrote rms voltage resistance allow compute average power full cycle note power voltage squared divided resistance real reason rms way compute average power dissipation resistive circuit power consider power factor cosine phase angle resistor 1 course instantaneous power function apply rms calculation youll get value physical meaning said first day dont know good measurement gadgets applied swith mode power supply httpwwwanalogcomen search ade7756an active energy metering ic serial interface cheers carlos e r looks good designer uses besides switch mode supply still converts mains dc smoothed switching ferrite core transformer rules sending high frequencies back mains supply power going mb buffered speak dave thu 07 aug 2008 063845 0200 opensuse ot much power pc really consume