[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

NST primary question



Original poster: "harry by way of Terry Fritz <teslalist-at-qwest-dot-net>" <harry-at-prcn-dot-org>

I have unpotted a pair of 15/30 Allanson nst's that had direct shorts on th 
110v side, upon inspection the capacitors had melted into an unrecognizable 
mass and the windings look ok but the smell isn't right and it seems like 
some of the winding is shiny copper (no enamel) the secondaries look ok so 
i may attempt to make a primary winding.On previous disasemblies of 
Allanson nst's the primary seems to be constructed of 2 windings,one of 
heavy wire on the outside and an inner winding of slightly smaller guage wire.

My questions are:

If I decide to wind my own primary is it necessary to include the inner 
winding ?

If the primary is toast does that mean the secondaries are toast ?

Could someone tell me what the Ohm reading should be of the secondaries and 
primary once they are removed from the core ?

I don't believe I could wind a primary as good as the factory job so I was 
thinking of removing 3 shunt plates per side and going 1 or 2 gauge sizes 
smaller for the winding so there would be enough room twix core sections, 
does this sound ok ?

Could some one tell me how many turns are required for the primary winding ?

Thank you

Lance