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The Randall Museum in San Francisco hosts a large HO-scale model model railroad. Created by the Golden Gate Model Railroad Club starting in 1961, the layout was donated to the Museum in 2015. Since then I have started automatizing trains running on the layout. I am also the model railroad maintainer. This blog describes various updates on the Randall project and I maintain a separate blog for all my electronics not directly related to Randall.

2024-02-25 - NCE Boosters Voltage Level, Continued

Category Randall

After noticing that one of the NCE boosters had a different output voltage, I double checked the setup. We do indeed use NCE PB5 boosters, and their power brick has a switch for 12 V (N scale) or 13.8 V (HO scale). One of them was incorrectly set on 12 V.

That was enough to fix the voltage issue on the track:

Booster 1

13.1 V

P1 V1 (Valley1), P1 STKYD

Booster 2

12.4 V

P2 V2 (Valley2), P2 NAPA, P2 TOWN LODI, P2 FAIRFIELD

Booster 3

12.5 V

P3 MTN-1, P3 BRN RCH-2

Booster 4

12.6 V

P4 MTN-2, P4 BRPORT, P4 SIA RND, P4 STK STN

Booster 1
Stockton Yard

Booster 2
Lodi

Booster 3
Mountain 1

Booster 4
Mountain 2

I also added a static display of the voltage of Booster 3 by the command station:

This covers the power districts for Mountain 1 (MTN-1), Branchline (BRN), and Richmond Yard (RCH-2). This is the area where we suspect some trains struggle and Allen and I wanted to have an easy way to visualize the voltage.


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