Support Request: Redstone Signal from Cables

Hi everyone!

I just wanted to know whether there is a way to get a redstone signal when energy flows through a cable or not.

I'd be very glad if someone could help me with this problem.

I've already tried that, but it doesnt work because the Energy-O-Mat doesn't emit a redstone puls when there is energy flowing through it.
It emits the redstone signal if energy could flow though it, so if there are enough coins inside the machine, and that doesn't really help me.

Sorry for my bad English by the way, I usually speak German.