Created by
Created October 07, 2012
Last modified October 07, 2012
Tags relay   switch   usb  


5vdc From the USB port of the PC fires a 5V mini relay which passes 120VAC to the coils of a larger 120VAC 10A relay. The normally open contacts of the relay provide power to the duplex receptacle. I use the receptacle to plug in a surge protector and any devices I want to have on when the PC is turned on.


Turns on printer, monitors and other PC peripherals only when the desktop is turned on. Not sure if this is a good or safe design, but it works.


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