 Joined: 30/08/2016(UTC) Posts: 636 Location: Brussels
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If you have a mixed system, digital loco control via a MS2 and trackbox, analog turnout control via a transformer, can the negative or 'earth' wire of both circuits be common? Electrically it seems obviously yes, but I never know for sure with electronics. |
I heard that lonesome whistle blow. Hank Williams |
 1 user liked this useful post by Jabez
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Joined: 16/02/2004(UTC)
Posts: 15,442
Location: DE-NW
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Hi!
You can have a common ground (which is neither "negative" nor "earth").
In a Märklin layout you would normally use the brown wire as a common ground.
With Mobile Stations and Central Stations, do not make the transformer that feeds the station part of the common ground. Better do not connect anything else to the transformer that feeds the MS/CS. |
Regards Tom --- "In all of the gauges, we particularly emphasize a high level of quality, the best possible fidelity to the prototype, and absolute precision. You will see that in all of our products." (from Märklin New Items Brochure 2015, page 1) ROFLBTCUTS  |
3 users liked this useful post by H0
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 Joined: 15/10/2006(UTC) Posts: 2,319 Location: Washington, Pacific Northwest
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Agree with H0.
When things are ideal, its not an issue, but its the "how are things handled" when there is a non-deal situation, such as an accidental bridge from the other AC signal to the digital track, or a short, those non-normal situations can be problems for the electronics of the digital side. |
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1 user liked this useful post by Minok
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