primary winding


Cars & Driving

  • noun outer winding of the ignition coil; typically 200 turns of relatively strong wire.


  • In a transformer, the winding that is directly connected to the input power. One or more secondary windings provide the output to the load or loads. For example, a primary winding accepts the input energy an AC line provides, while a secondary winding provides the energy to the load at a different voltage. Its abbreviation is pri, and its symbol is P. Also called primary (4), or primary coil.
  • symbolP
  • synonymprimary coil