Interference shield suitable for use in automated manufacturing

Details Interference shield suitable for use in automated manufacturing Interference shield suitable for use in automated manufacturing

1990-08-01

1991-10-08

Picard, Leo P.

Electric heating

Metal heating

By arc

21912162, 21912183, 333248, 333252, 174 35R, B23K 2600, B23K 2602, H01P 100, H05K 900

Patent

active

050556517

ABSTRACT:
A housing (100), that is suitable for use in a automated manufacturing and/or testing environment, is constructed and arranged to substantially enclose and shield a trimmable electrical circuit (107) from radio frequency interference external to the housing (100). At least a portion of the housing (100) is constructed and arranged to shield while contemporaneously allowing a laser beam (114) to pass therethrough so as to focus on at least a portion of the trimmable electrical circuit (107) and thereby laser trim the trimmable electrical circuit (107).

REFERENCES:
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patent: 4412255 (1983-10-01), Kuhlman et al.
patent: 4613530 (1986-09-01), Hood et al.
patent: 4631197 (1986-12-01), DeFreese et al.
patent: 4758686 (1988-07-01), Takahashi et al.
patent: 4760456 (1988-07-01), Liang
patent: 4779031 (1988-10-01), Arends et al.
patent: 4782320 (1988-11-01), Shier
patent: 4838475 (1989-06-01), Mullins et al.
patent: 4896001 (1990-01-01), Pitts et al.
Schulz et al., Shielding Theory and Practice, Aug. 1988, IEEE Transactions on Electromagnetic Compatibility, vol. 30, No. 3.
Tecknit, EMI Shielding Design Guide, .COPYRGT.1982, pp. 2-1, and 3-1 thru 3-5.

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