Been thinking about getting one of these to build my own power supply. I like the fact that the there are several 9v isolated windings, but am at a loos on what to do with the 9vac 2amp winding. I've got a couple pedals that run at 9vdc and take lots of ma, (Timebender and converted nanoverb) and if it were 9vdc, well that would rock. Anyway, I am assuming to convert that winding to DC you would lose some volts, and to regulate it you need a couple extra...but what if I converted, used a voltage doubler and then a regulator? What effect does this have on the 2A?

Searched the forum and google to see if anyone has done something like this before but turned up nothing. Got a good read on the power supply article by R.G though.

Maybe we're not talking about the same Weber Transformer, but WPD... has 8 x 11VAC @ 300mA outputs and 1 9VAC @ 2A.
When you'll rectify VAC you'll have ~1.4 x VDC then ~15,4VDC for each 11VAC output and ~12.6VDC for the 9VAC out, enough to be regulated with a LM317.
Your only concern will be regulating VDC @ 2A, then you'll need some power regulator (1.5A max, for LM317)

No, that's the one! Here it is for others to check out:
http://taweber.powweb.com/store/pdlxfmr.gif

I am completely ignorant here. I'm just going to write my thoughts and hopefully someone knowledgable will correct me. So we basically have 8 11vac 300ma windings and 1 9vac 2a winding. And that is straight out of the transformer.

Starting with the 8 11vac 300ma windings, I know they need to go through the diode bridge a couple caps and a voltage regulator as seen here:
http://www.geofex.com/Article_Folders/Spyder/spyder.htm

I am planning on using a bridge rectifier that has a 1.1v forward voltage drop. I am going to go with the recommended 220uf capacitor after the bridge. At that point what would be the voltage out? I know the first half of the formula is Vout= (11x1.414) - (2 x 1.1) which equals 13.354, but not sure about the second half which is (Iload+(8ms)/(2+C)....if anyone could fill that in, that would be very helpful. And do I assume correctly that after the bridge rectifier the AC is converted to DC?

Also, in order to maintain the 300ma of the windings (is that 300ma each winding?) do I need to use a voltage regulator that is capable of more than .1a current output? I see many of the ones used in various projects on google are rated at the .1a output.

Friendly weekend bump

Still wondering about how the rectifier, regualtor and doubler would interact with the 2a rating of that 9vac widning. I've found a regulator capable of handling the 2a but not a voltage doubler.

It just occurred to me to check the timebender and nanoverb power supplies. All this time I thought they were running on DC, but no.....they are AC!!

Is it "safe" to run this winding straight to the pedals (I'll more than likely daisy chain) or should I implement some kind of regulating circuit?