(19) |
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(11) |
EP 0 190 929 A3 |
(12) |
EUROPEAN PATENT APPLICATION |
(88) |
Date of publication A3: |
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01.07.1987 Bulletin 1987/27 |
(43) |
Date of publication A2: |
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13.08.1986 Bulletin 1986/33 |
(22) |
Date of filing: 05.02.1986 |
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(84) |
Designated Contracting States: |
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AT BE CH DE FR GB IT LI LU NL SE |
(30) |
Priority: |
06.02.1985 US 698981
|
(71) |
Applicant: KUHLMAN CORPORATION |
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() |
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(72) |
Inventors: |
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- Schlake, Randall L.
()
- Hamkins, Clark J.
()
- Richerson, James D.
()
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(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.