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#254879
JACQUES
Participant

    2 cents…

    What are ampere-turns (ni)?
    The more loops, the more magnetic fields unite and reinforce each other and,  as a result, the total magnetic field becomes stronger. by the wire and the result is called
    Ampere-Turns (NI).
    your “high resistance  primary” fits in the same  volume (space) size   as the other  coil (lower resistance one)  so what  is the variable…..to cause greater  primary resistance…???    wire size  &  more available turns 
     more wire turns  x amps =  more magnetism  to impart  on the secondary winding !  🙂 .    the fact that it ” fires ” with a lower current  input is compensated by ( or  reflects)   the higher number of  “wire turns” forming the coil primary
    see 2 coils   same “pull strenght”   yet  different  amps  are flowing  but the NUMBER of windings  is doubled
     in conclusion I think both of your coils are fine  but built at different periods  by the same company 🙂

    Joining AOMCI has priviledges 🙂