Help! I'm not sure if i implemented this correctly, or if this is doing what it's supposed to. Got the ideea from http://www.lynx.bc.ca/~jc/superFullWave.html and i just love the details there are there.
The output signal does, indeed, look like |x| but i'm not sure that i set up the opamps correctly - in the schematic it's powered by -9v.
On another note the signal is a lot of fun to play around with when playing with the bottom 2 resistors :)
