You'll need transformers for it to step down the voltage from the grid to 9v. I have a little thing that I'm working on where I have two transformers that step down to 2x12v each and then I run it through a bridge rectifier, 9v regulator and a couple of capacitors for filtering. It's really simple and I did it all on vero. I haven't hooked it up yet but I will soon. It's pretty much bulletproof and the 4x9v regulated outputs are all isolated completely from each other.
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