Relay Tutorial: Control AC Outlets & Machines
Learn to control the power to a normal AC outlet using 5 volts DC. When dealing with low voltage electronics such as iPods or cell phones, it may seem hard to make the jump to AC powered, high voltage appliances and machines.  For example, take a look at the “blender defender” above. Actually, controlling these high voltage beasts isn’t too difficult with the help of a relay (pictured below).
A relay uses a switching mechanism that essentially says if 5v input received, then release 110v to outlet or appliance. This fantastic, detailed tutorial can tell you all you’ll ever need to know.
Further Outstanding Tutorials:
January 11th, 2009
Isn’t this just a relay?
January 11th, 2009
Yep, it’s accomplished with the help of the relay.