Automated laser trimming of resistors

Details Automated laser trimming of resistors Automated laser trimming of resistors

2005-04-05

2005-04-05

Evans, Geoffrey S. (Department: 1725)

Electric heating

Metal heating

By arc

C219S121680, C338S195000

Reexamination Certificate

active

06875950

ABSTRACT:
In the laser trimming of passive circuit elements such as resistors, capacitors and inductors, various trimming parameters must be selected. To select a element is compared with a target value for the parameter to determine an offset value between the measured parameter value and the target value. The relevant trim parameters are then selected based on the determined offset values.

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patent: 5103075 (1992-04-01), Schmitz
patent: 5446260 (1995-08-01), Uhling et al.
patent: 2-155583 (1990-06-01), None
patent: 4-71793 (1992-03-01), None
patent: 4-290207 (1992-10-01), None
patent: 5-135911 (1993-06-01), None

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