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I have been using two ZW-L's to operate my layout for three years. Despite my best efforts I manage to activate their circuit protection at least once every time I use the layout by running an engine into an open turnout (two rail layout.) The output protection of a ZW-L is equivalent to the PSX1-AC. The only reason to include them with a ZW-L would be to set the protection level at less than 10A. I have a number of the PSX boards on my layout, mostly the auto reverser boards, they are all excellent products.

@Windy City posted:

CAPPilot,

I noted the capacitor in the above drawing.  I thought the capacitor was to bridge any insulated rail joints to preserve the TMCC signal.  Why is it needed for accessories?

Mainly because I worded it wrong  Yes, if you use an isolated rail to energize accessories and you are having TMCC issues, adding the capacitor may help.

@Trestleman1 posted:

To all,

I'd like to order some chokes just in case I need them.  Does someone have a part # that might be good for this application?

Don

This is the one I used

https://www.digikey.com/produc...4BHA-220K-ND/7695908

If you need one I’ve been putting them on a PCB with a TVS making it a little cleaner. I still have some left if you want send me a email.
E9705CDD-2669-4439-96C9-E4E98494CB78

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@zhubl posted:

This is the one I used

https://www.digikey.com/produc...4BHA-220K-ND/7695908

If you need one I’ve been putting them on a PCB with a TVS making it a little cleaner. I still have some left if you want send me a email.
E9705CDD-2669-4439-96C9-E4E98494CB78

Hi Zachariah, I wrote you last night about buying some from you. Sent it to your profile email, might have gotten into your spam folder. Thanks, Keith

https://ogrforum.ogaugerr.com/...0#154026431054576230

I stand corrected - a closer look at my wiring configuration revealed that the PSX units were placed between the transformer throttles and the TIU channels. This was done to avoid the DCS signal degradation (which matches experience).

The trip point is set for 8 amps, so everything is perhaps on the more sensitive side.

Given this discussion, is a tvs recommended between the track and TIU to further safeguard the TIU?

BTW; The video posted earlier by Superwarp1 provides an excellent demonstration of the PSX capabilities.

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