6v comprising soft iron u- shaped core of circular section fitted with bobbins which are wound with c
6v comprising soft iron u- shaped core of circular section fitted with bobbins which are wound with copper wire. The limbs of the core are 100 mm long and 16 mm dia. The bobbins are connected together in such a way that the direction of the winding round of each pole is obvious. Terminals are provided as shown illustration.
