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As John says, probably a 9V replacement circuit.  It appears the black wire of the battery cable connects to the "+" output of the circuit. This reversal from convention suggests the 9V connector is meant to look like a battery rather than take power from a battery.  The ginormous cap can mean many things but suggests it is for rolling stock (rather than track-side) to take dropouts.

Could it perhaps be a type of 'BCR' intended to replace the battery on Legacy locomotives? The battery connector would connect to the battery connector in the locomotive, and the 2 wires would go to the AC power. I have heard that these exist, but I've never seen one.

 

Edit:  After a bit of searching, I think that I've found it.  It would seem to be a battery eliminator designed to power a camera from track power, although I suppose that it could still be used as I suggested above. This link shows a circuit that looks identical to the one shown above.  http://www.wirelessmicrocolorc...ttery-Eliminator.htm

Last edited by N.Q.D.Y.
Originally Posted by N.Q.D.Y.:

Could it perhaps be a type of 'BCR' intended to replace the battery on Legacy locomotives? The battery connector would connect to the battery connector in the locomotive, and the 2 wires would go to the AC power. I have heard that these exist, but I've never seen one.

I can't imagine what the utility of this would be.  The board obviously has no storage capacity, and when there's rail power available, the battery on a Legacy locomotive isn't really in the picture.  When you lose rail power, this power supply will also lose power, game over.

 

I believe it's probably a battery eliminator for the camera or a similar device.  So, your second guess is probably the best.

I agree, it probably is for a camera - I have two of those micro cameras.  I'll give it a try.  I was thinking maybe a battery replacement for Railsounds to keep it going during momentary power drop outs, but after looking at the BCR thread my board doesn't seem to have the capacitor size needed for that.  Thanks for the help!

 

That is the 2nd camera that I bought, the 1st was from Micro Mark for about 3 times as much.  It is the same camera.

 

John

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