@Adrian! posted:1. If you put the TVS across the motor, you're guarding this train's electronics from it's own transients, but not transients from other sources on the layout (other trains, solenoids, relays, ...).
2. If you have digital signaling like DCS, adding too many TVS all over will begin to impact the signal performance, since even when not-clamped they present significant capacitance at their input terminals. If you have no digital signaling then there's no harm done.
Adrain, thank you for confirming this.
Assuming strategic location of TVS diodes elsewhere around a non-DCS layout (transformer outputs, and across accessories with coils and other locomotives on the tracks:
Would there be any significant attenuation of the TMCC signal by adding TVS diodes on a locomotive's motor driver board output(s) as well as on the PCB track power inputs, thereby maximizing protection of the electronics in the locomotives?
