Diode Capacitor

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http://forum.allaboutcircuits.com – Hi guys Would be great if some one could explain what is going on here I made this diagram so it would be much easier to understand what i got in front of me I am feeding it with 220VAC and getting 309VDC out, How is the voltage stepped up to 309V ? Attached Images images (2).jpg (7.8 KB) (Embedded)