ok, i try to reformat the question as simple as i can.
I have an information in a 125Khz carrier, 200Vpp. The information is the Vpp that change between 199 and 200Vpp.
Let's cut the signal with a diode, and work only with the pulsed positive part.
If easier to work with pulsed only positive part, after a diode, so 100 and 99,5V are now the levels.
I need to have this information whit a -99,5 offset, a kind of cutting the wave, so i would get 0 and 0,5V information.
I don't have other DC sources thant 0 and 5V.
That's all i need for now.
thanks
angelo