I have a question regarding Marklin's Boosters. I am using a 6021 controller. The power input comes from a 32 VA Marklin transformer, specifically the yellow fixed voltage and the brown ground terminals. I generally do not run more than 3 loks at one time. My analog turnouts and lighting power will come from a separate and independant source. The ground for turnouts and lights will be connected to the master ground bus.

Should I wish to run more loks does anyone see why I cannot hook up another 32 VA Marklin transformer with the first one in parallel and IN PHASE to make additional power available to the 6021?

What is a booster other than an auxilliary power source?

I don't want to miss something.

Please do not do this.
Aside from the explicit warning on the tags around the power cord of Marklin transformers ....

1) The assumption that any 2 transformers 'out of the box' are in-phase is not a reliable one. You have to confirm by external means (e.g. osciliscope, lightbulb accross the yellows)
2) More importantly unless the characteristics are perfectly matched (which is unlikely due to differing internal resistances) they will fight each other.

Doing as you suggest may appear to work but it is under load that any wastage becomes apparant and thus defeat the purpose of trying to attain the power at the high end.

Technology does exist to monitor/manage and balance but you wont find it in the humble transformer without electronincs.

Thank you all for your comments. I did not think about the possibility of "back transforming" under certain circumstances. It did not cross my mind. I had planned to polarize the plugs on the two transformers after checking and plug them into a separate power strip which would allow in phase switching at the same instant. Accidents do happen when one least expects it so it would have not been wise to make the problem possible.

It never ceases to amaze me how wonderful this forum is and how our members are so helpful. My thanks again. Dick