x-10 transmit & receiver test

[texas5]

how can i know when the zero crossing happen???

[dhouston]

AN236 where you got the circuits you've posted, also shows how to detect ZC.

I really do not understand what you are trying to accomplish. The easiest way to see if the circuitry works is to put an X-10 signal on the powerline and see if you can detect it. AN236 also shows a circuit for connecting an oscilloscope to see the 120kHz.

[texas5]

ok.thanx a lot...