Here is my problem
I've built my own home automation by using some relays, driven by 12V AC (read Alternating Current) to switch them.
Now i want to use my raspberry's GPIO pins to switch these relays.
-The GPIO pins deliver 3.3V DC
-My relays need 12V AC to switch
As far as i know i can't use a transistor because it only works for DC?
Is there any solution to this? And i prefer not using any other power source but my raspberry and the 12VAC i already have.