Hi,

I attach a leaflet about the wiring of classic trains with transformer.

ba-anschl-el-bahnen-68621-tyn-0992-au.pdf (4,242kb) downloaded 114 time(s).

Regards

Markus

Hi Abdul,

Märklin showed this layout:



With some additional tracks you can also build up layouts from this book: https://dl.dropbox.com/s...5100-5200-ya-0281-ju.pdf

Regards

Markus

Dear Markus,
Thank you for your Reply and your Assistant, which I really appreciate.
Regards
Abdul

Dear Markus,
Thank you for your Reply and for your Assistant which I really appreciate.
Regards
Abdul

You don't need the third Transformer at this stage, keep it simple for now. It's less wires for one thing.

As per the other topic you posted in, you can safely connect the Brown leads together - Brown goes to the metal of the track / two outer rails so they are joined anyway when you build your layout.

But, you may find it easier just when you are starting out to keep things neat and simple. On that basis, you can run the Red ('B') and Brown ('0') (from Transformer 1 to one loop, and the Red & Brown from Transformer 2 to the other loop but of course the two loops must be electrically separated where they intersect by placing an insulator between the center rail contact tongues.

If you have electric turnouts, (or signals) you run the Yellow wire to the Yellow ('L') socket of the Trafo. Then the lantern in the Turnout will glow as well.

The two Blue wires go to the respective Red & Green sockets of the control button box. The connector on the side of the control button box feeds back to Brown of the Trafo

The booklet that Markus attached is very good and has some excellent diagrams and descriptions - and you can read the language of your choice from the eight available

Really, you can't go wrong, BUT, please, you MUST understand and heed the description about getting the Polarity correct - ie ensuring that the two Trafos are 'in phase' with each other.

If you have trouble getting your head around this you should hold off wiring them up until it makes sense. There is a risk of potential electric shock. That can really ruin your day.

Keep the questions coming. Sometimes the various booklets can still be bewildering at first and some things may just need explaining in a different way. You'll get all the help you could want here.

Oh, and getting back to the third Transformer. If you were to build a layout with two loops, and also a small shunting yard, then that is when the third Trafo will become useful. You could have separate control of both Loops, and also separate control of the yard. But that's getting real fancy!!

Cheers

Steve

Not necessarily. I am unfamiliar with US wiring & household plug standards. Here we have plugs that can only go one way, but we can still have the same issue especially on older units that may have had the plug or cord replaced.

One of our US members can clarify this but you still should not take that as a given.

The only simple way you can check this is by the step shown on page 8/9 of the download Markus gave you....

Here I have combined both pages into a single guide - if you don't have a lamp to test with, I really suggest you get one. It will help with with all manner of other troubleshooting. You could also use a multimeter if you have one but the lamp is so simple.





What this is telling you to do is to run a wire between the two BROWN outputs, and then connect the lamp as shown across the two RED outputs.

Now turn the control up no more than halfway.

If the Trafos have the same polarity ("in phase") with each other, the Lamp should NOT glow. But if they are out of phase, the lamp will light up.

Be sure you get this right.

Lamp remains off = Good (in-phase)

Lamp comes on = BAD (out of phase)


Here's why this is SO IMPORTANT.

You will already know that the Transformers in our Hobby are used to REDUCE the household voltage to a safe level, around 20v give or take in the case of Märklin.

However, Transformers will also work in reverse. ie to INCREASE voltage if required. An example of this would be a devise used to power a TV or Fridge when camping, from your Car Battery.

In the example diagram shown above, if the light glows to show they are out of phase, and you disconnect one of the plugs from the wall outlet, there may now be a dangerously high voltage present on the plug pins.

TRUST THIS ANALOGY - THE PAINT IS WET, DON'T TOUCH IT JUST TO BE SURE.

One final note. The RED and the YELLOW outputs on the Trafo are the same, EXCEPT that the Red is a controlled output via the Red speed knob. Whereas the Yellow is always on at full output voltage. If you were to connect the Red from the track to the Yellow, the Loco would take off at full speed and you'd have no control.