bmoran4 posted:The TVS diode protects against voltage spikes caused by collapsing electromagnetic fields generated by the layout (relays, solenoids, motors, derailments etc).
A short video about those spikes:
Since the source is layout side, you want the protection layout side. Many people put them on the track, others put them on the output terminals of the transformer, and some do both!
With a ZW, it is easy to take 4 TVS diodes, shape them like this so they wrap around the binding posts, (A-U, B-U, C-U, D-U).
Thanks for the good information and video. The girl is cute, but should consider switching to decaf 
...She was helpful though.
OK, now... is there a specific TVS I need for the ZW? That's all I have to do is get four of them and put them between the hot and common posts on the back (and that won't cause short)?? Seems too easy. I've seen so many posts with guys building highly complex sequential TVS configurations onto wood panels and nearly chucked the idea of even using the ZW again with the thought of all of that hassle.
Which TVS would be appropriate for ZW outputs?
