I have lighting fixture that has two lighting halogen transformers 110VAC, 60Hz to 12VAC and 150W each in something like circular box. Their inputs are connected in parallel.
Their outputs are 12VAC, and they are not interconnected, each has its own load of several halogen bulbs.
They are connected in parallel configuration on primary sides. I am planing to take it to Europe and I will have there 220VAC input, 50Hz. May I connect these transformers in serial configuration, so then having 220VAC across both transformers in serial connection on primary side, I will have each transformers exposed to 110VAC, am I right. I know although they are the same type, they are not identical. I know that with 50Hz the transformers will not have enough core for that frequency, so possible some humming noise, right?
Then leave secondary side as is, I think I will be fine. What you think if any problem with that configuration?