Toroidal electrical transformer and method of producing same

Details Toroidal electrical transformer and method of producing same Toroidal electrical transformer and method of producing same

1987-01-15

1988-10-25

Levy, Stuart S.

Winding, tensioning, or guiding

Coil holder or support

Spool or core

H01F 304

Patent

active

047798122

ABSTRACT:
A toroidal electrical transformer having a low voltage coil, a high voltage coil and an annular magnetic core is disclosed. The preferred low voltage and high voltage coils are each continuous in substantial part over their length and form an arcuate elongated passage therethrough. The preferred annular magnetic core is wound in place in said arcuate elongated passage substantially from a continuous strip of magnetic material. Various components and sub-assemblies are also disclosed along with various apparatus and methods for producing such toroidal electrical transformer, its components and its sub-assemblies.

REFERENCES:
patent: 1940175 (1933-12-01), Loubet
patent: 2191393 (1940-02-01), Humphreys
patent: 2245180 (1941-06-01), Boyajian
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patent: 2811699 (1957-10-01), Whittier
patent: 3049793 (1962-08-01), Cooper
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patent: 3340489 (1967-09-01), Bastis et al.
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patent: 4524342 (1985-06-01), Mas
Patent Abstracts of Japan, vol. 1, No. 19, 3/24/77, p. 548 E 76; Kokai No. 51-116929; Appln. No. 50-41460.
European Search Report, EP 87-20,039, 4-1987.
"Transformers Principles and Applications", American Technical Society, 12/1947, by Dunlap et al, pp. 1-37.
Trends in High Efficiency Distribution Transformers for the 1980's by Donald J. Bailey, Oct. 8, 1986.
"Type Testing of Amorphous Metal Distribution Transformers", by Dorman W. Whitley, Westinghouse Electric Corporation.
"Losses and Sound Level of Amorphous Metal Cores", by K. C. Lin, Westinghouse Electric Corporation, date unknown.

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