Author Topic: "Keep Alive" for ESU Nano Fx  (Read 490 times)

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RBrodzinsky

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"Keep Alive" for ESU Nano Fx
« on: September 08, 2017, 01:19:15 PM »
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I just finished installing my first Nano Fx into a Kato N-scale BiLevel Cab Car. Even with adding extra weight, the decoder and lights flicker, a lot, while running along the track.  Question: while the manual doesn't say anything about this, can I simply add some capacitors across the common + (blue wire) and the GND pad on the decoder, similar to the LokSound decoders?
Rick Brodzinsky
Chief Engineer - JACALAR Railroad
Silicon Valley FreeMo-N

jdcolombo

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Re: "Keep Alive" for ESU Nano Fx
« Reply #1 on: September 08, 2017, 01:29:02 PM »
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Hi Rick.

If there is a GND pad, then you should be able to use caps with the positive connected to the common function output (blue) and the negative to ground.  Function-only decoders still use the same general circuitry as motor-control decoders; they still have a bridge rectifier and the digital circuits, so I don't see any reason why a keep-alive couldn't be used.

John C.

RBrodzinsky

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Re: "Keep Alive" for ESU Nano Fx
« Reply #2 on: September 09, 2017, 12:43:06 PM »
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I added 3 20V 150uF caps, for a total of 450uF buffering.   Works like a champ, no more flickering (on the test layout, anyhow). As long as my layout (and FreeMoN modules) track is clean, should run great.

Thanks for the confirmation, John.
Rick Brodzinsky
Chief Engineer - JACALAR Railroad
Silicon Valley FreeMo-N