@Adrian! posted:I think I'm probably confused and not saying the right thing for the thread or didn't write it well. Back to step one...
1. You can't put a choke at the input of a DCS engine since then the PS board gets no signal.
2. You can't put a choke in series with a TVS to protect other electronics, or the TVS is no longer effective at suppressing a voltage across the series combination.
I think John is talking about an L-C low-pass arrangement, with the TVS as the C. The supply to the electronics would be taken off across the TVS. So, the L protects the DCS track signal from the shunt capacitance of the TVS, but the TVS is directly across the electronics, affording maximum protection to the electronics, but less protection to the track.
