would anybody have an idea on how to design a device that would read the mains frequency from an outlet and if the frequency was low (ie. the grid is under stress) it would turn off the appliance (eg. a refrigerator ) for a set period of time such as 5 minutes? a circuit using a simple relay and a mirocontroller maybe?
Submitted March 02, 2016 at 01:46AM by mad_fecker http://ift.tt/1REAcUh AskElectronics
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