DEVELOPMENT OF QUALIFICATION TECHNIQUES FOR HERMETICALLY SEALED FUSES.
JOHNS HOPKINS UNIV SILVER SPRING MD APPLIED PHYSICS LAB
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The report presents the development of qualification tests to be employed on fuses designated for use in satellites. Of particular interest is the development of a means of measuring the transient handling capability of a fuse. Means of measuring the maximum transient repetition rate and of detecting the quality of hermetic seals are also discussed. Included are two appendices, one describing the fuse determination procedure and the other discussing fuse theory. The idea basic to the problem of transient handling capability measurements is to determine the thermal rise time of a fuse and then to limit the possible current transients to less than that value. The thermal rise time, however, is found to be current-dependent. Hence we find, as we would intuitively suspect, that the parameter of interest is not the magnitude of current but the area under the current time curve. Author
- Electrical and Electronic Equipment
- Manufacturing and Industrial Engineering and Control of Production Systems