On Wed, 26 Jun 2013 22:09:25 -0500, Arid ace wrote:

So, does that 3mH inductor have an air core as is shown on the
schematic? If so, what purpose does bridge X2 serve? Why not just
connect L7 in series with the primary of the transformer without the
bridge?

If L7 were iron core, I can see it having a large reactance until the
core saturates from the DC flowing in it. That would give the kind of
results shown, but only the first time it is used. After that, the core
would have some residual magnetism that would seriously reduce the surge
limiting effect.

Please explain.

--
Jim Mueller

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