Powering Powered Up hub from 9v track?

[dr_spock]

35 euros for a single cable? 

A 12 battery charger like the LiitoKala Lii-S12 can be had for the same amount.  Our LUG got around 2 hours running time off AAA NiMH batteries at children hospital outdoor picnic events.

 

On 8/3/2025 at 4:29 AM, Toastie said:

You can also use DC (e.g., 15V), run that through a bridge rectifier with both "~" inputs connected to the pickups (causing a voltage drop of about 1 V). This takes care of polarity changes caused by reversing loops). Then connect the +/- terminals of the rectifier to a 7809 regulator, and then feed the PUp hub from the 9V output of the regulator. Experience shows though that voltage "outages" caused by insulation for reversing loops/polarity changes = 1 plastic track piece, or sometimes bad contact between the pickups and the hub do lead to malfunctions, particularly regarding the PoweredUp hubs. Some sort of buffer (caps, supercaps, etc.) are thus required.

Best
Thorsten        

For sure DC can be used. I think AC would be more model railroady?  One can impose DCC control signals over AC to run DCC and track powered PU trains on the same tracks.