Can someone explain the behaviour and the output(at B) for the following circuit? What I think is that, C will charge and at one point stop conducting. So at B it will be HIGH output at that instant and till it charges. Now after it is fully charged, it will discharge throught R, so the output should decrease with a slope to 0,and this should repeat. I am not sure if this is right. Can someone please confirm that? I tried building the circuit, but the rise and fall happens only once. Can someone explain why would it not repeat itself?