High voltage feed through

Details High voltage feed through High voltage feed through

1997-06-23

1999-07-27

Reichard, Dean A.

Electricity: conductors and insulators

With fluids or vacuum

Boxes and housings

174 18, 174 5061, 174152GM, 439559, H05K 506

Patent

active

059293730

ABSTRACT:
A high voltage feed through supplies power to a device through a passage in a wall of a vacuum chamber. The feed through includes a ceramic body comprising a first brazing surface, a second brazing surface, and a central passage for a conductor, a power source connector brazed to the first brazing surface, and a mounting flange brazed to the second brazing surface, wherein the first and second brazing surfaces are positioned to reduce tensile forces on brazed connections. The brazing surfaces are preferably coplanar to reduce the tensile forces, or angled to place residual compressive forces on the brazed connections. The tensile forces on co-planar surfaces are further reduced by brazing ceramic rings to the power source connector and the mounting flange opposite brazed connections to the ceramic body of the feed through.

REFERENCES:
patent: 2458748 (1949-01-01), Stupakoff
patent: 3331913 (1967-07-01), Johnson
patent: 4152540 (1979-05-01), Duncan et al.
patent: 4213004 (1980-07-01), Acker et al.
patent: 4687417 (1987-08-01), Amboss
patent: 4694264 (1987-09-01), Owens et al.
patent: 4841098 (1989-06-01), Dunton
patent: 5223672 (1993-06-01), Pinneo et al.
patent: 5348497 (1994-09-01), Nitescu
patent: 5430257 (1995-07-01), Lau et al.

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