(19)
(11) EP 0 190 929 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
01.07.1987 Bulletin 1987/27

(43) Date of publication A2:
13.08.1986 Bulletin 1986/33

(21) Application number: 86300783

(22) Date of filing: 05.02.1986
(84) Designated Contracting States:
AT BE CH DE FR GB IT LI LU NL SE

(30) Priority: 06.02.1985 US 698981

(71) Applicant: KUHLMAN CORPORATION
 ()

(72) Inventors:
  • Schlake, Randall L.
     ()
  • Hamkins, Clark J.
     ()
  • Richerson, James D.
     ()

   


(54) Apparatus and method for fabricating a low voltage winding for a toroidal transformer


(57) A winding apparatus and method for fabricating a multifilar low volatage winding for a toroidal transformer is disclosed. The method and apparatus use a wire storage magazine 18 and a wire winding shuttle 20 which rotate about a semitoridal winding mandrel 38 to wind a multifiliar low volatage winding 48 on the winding mandrel having a greater radial depth of turns at the radially inward leg of the winding than at the radially outward leg of the winding. The multifilar winding can be wound with a group of conductors in a single pass over the winding mandrel, or wound one conductor at a time using multiple passes over the winding mandrel, or wound using multiple passes over the winding mandrel with some intermediate number of conductors being wound during each pass.





Search report