Is 19v too much?

I've got a couple of 19v transformers of the right level of amperage, but is 19v too much for a dcc++ system? Track side of course, I know that it will cook the circuit board.

Thanks

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Using an L298n for programming and BTS7960B for main.

And also an arduino mega and a normal arduino motor shield.

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" ... many HO keep alive devices will self destruct above 15 Volts on the track..."
https://model-railroad-hobbyist.com/node/35753