[Boatanchors] Paralleling HV Transformers

[Kees & Sandy]

Hi Byron,
Paralleling primaries is no problem. If you parallel the secondaries they will cause current between the two if the output phase/voltages are slightly different....may not be enough to worry about since they are identical, but measure it. Also be REALLY REALLY careful to make sure they are in phase ....if 180 degrees out, there will be a BIG BIG flash of light. 
73 Kees K5BCQ

-- "Byron Tatum" <bjtatum1 at peoplepc.com> wrote:
Hello-
    If I could bother someone for an answer here :
        I have two identical HV transformers, each one does a great job at around 1900 Volts at 400 mA. (in choke input with 10 mFD.) powering a single tube (4CX400A) amplifier. I am getting ready to start using some dual tube amps (4CX400A) and was considering paralleling two of the transformers, as two of these guys are still more compact than other older style transformers that would fill the bill.
    Are there any special precautions in paralleling the primaries / secondaries ?
                                                        Thanks, WA5THJ