The regulator input never gets here more than 15V because I have a serious load on the unregulated section ( connected directly to the filtering capacitors ). Knowing this potential is a projecting rule for this kind of garbage supplys. Also you must know which is the whole variation domain for cos_fi on your local mains ( it's important to know if you have a more inductive or more capacitive loads connected on the same mains ) The capacitive reactance for pure resistive loads or for inductive loads is not the same (thinking from the capacitor life point of wiew ) and must be computed both for maximum voltage variation and supply cos_fi variation. Probably my last english phrases will be dificult to understood... Cheers, Vasile On Thu, 26 Jul 2001, Spehro Pefhany wrote: > At 11:32 PM 7/26/01 +1000, you wrote: > > >Hi Vasile! Great web page! But that picture power.gif > >scares me a bit! The only thing limiting the voltage > >across C5 is the current drawn by the load!! > > The regulator or C5 will break down before it gets to 50V, > most likely. ;-) > > Best regards, > > =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= > Spehro Pefhany --"it's the network..." "The Journey is the reward" > speff@interlog.com Info for manufacturers: http://www.trexon.com > Embedded software/hardware/analog Info for designers: http://www.speff.com > Contributions invited->The AVR-gcc FAQ is at: http://www.bluecollarlinux.com > =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= > > -- > http://www.piclist.com hint: PICList Posts must start with ONE topic: > [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads > > -- http://www.piclist.com hint: The list server can filter out subtopics (like ads or off topics) for you. See http://www.piclist.com/#topics