Please, if your post truly belongs in two NGs, cross-post it rather than multiposting. You can and should put all the relevant NGs into the 'Newsgroups:' header.
them to DC (similar to what a bridge rectifier
Do a web search on "voltage multiplier" Such circuits do something similar to what you are saying.
and then some filters and regulators to get a
rectifiers together then the output of one rectifier
If your two bridge rectifiers were powered by separate windings, then the bridge DC outputs could be connected in series. Otherwise, the connection results in some high current paths that do no good.