A transformer is not needed. Solid state switching regulators are used in most cases to handle the input voltage across filter capacitors following diode rectifiers. Safety is achieved by floating the input relative to the output voltage generation circuitry. I would expect to see pf correction in a modern application once the dust settles.
Dave -----Original Message----- From: Eric Walker <eric.wal...@gmail.com> To: vortex-l <vortex-l@eskimo.com> Sent: Sun, May 26, 2013 7:00 pm Subject: Re: [Vo]: About the March test On Sun, May 26, 2013 at 3:45 PM, Andrew <andrew...@att.net> wrote: B) seems unlikely because it would require batteries, and Hartman states that it was much lighter than that. Battery technology does not exist that could be that light, and/or occupy so little volume, and make up that total energy difference as measured over 100+ hours. Therefore, it seems that the only workable theory of possible deception is A). I recall Hartman clarifying that measurements were taken on the mains side (from Jed's post). I am not too familiar with circuitry. I assume that either (1) the measurement equipment (including the laptop) will need some kind of single-phase conversion in order to work off of the same mains, or (2) they will have to be routed to a separate source (in the case where the mains side has been tampered with). Assuming (1) for the moment, how easy or hard would it be to filter out hidden DC or AC when constructing the single phase conversion in order to protect the measurement equipment? Would you need a heavy transformer? Eric
