Power Supply Transformer Question

[mr_fender]

Hey all,

I have a quick question about building a power supply.  I'm looking to cook up a pedal board power supply based on Ted Webers transformer that has eight 11 volt, 300ma windings and one 9 volt, 2 amp winding.  I want to end up with one or two +18V outs, one -9V out, and a few +9V outs, all DC.  In order to get the 18V outs, I'll have to combine series pairs  of the 11V secondaries to get 22VAC which I can regulate down to 18V.  My question is how does this affect the current rating?  I believe that it will remain 300ma when combined in series to get 22VAC, but I want to make sure.  I know that when they are combined in parallel, the current rating doubles, but the voltage stays the same.  I'm not 100% sure about series connections.  I know the voltage doubles, but does the current rating stay the same or is it cut in half?

Thanks in advance.

[R.G.]

You are correct - the current rating of series connected transformer windings remains the rating of the smallest-current-rated winding. In the case of two identical, it's just the current rating of either one by itself.

[mr_fender]

Thanks RG.  One of those 18V outs will power my NeoVibe, which sounds amazing.  It's addictive.