| 摘要 |
A single circuit element, referred to as a solid state rectifying fuse (SSRF), rectifies an incoming AC signal and opens the circuit if a programmed maximum current level is reached. The anode or cathode depending upon the particular application is designed with a plurality of conductors strips in electrical contact with the P or N region, respectively. Conductor strips are composed of a material that melts open if the current limit is exceeded. Conductor strips are designed to have a lower total current handling capacity than that of the PN junction so that the current is reduced or terminated before the PN junction can "short." Depending on the desired maximum current of the SSRF, the current limit can be adjusted downward by burning out or severing some of the conductors. In this sense, it is a programmable diode.
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