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HPGe Detector, Part I: Repair » HPGe_filter

The black input filter for the HPGe bias voltage. The series resistance should be checked with an electrometer to make sure it is not open. I recommend cleaning and drying the HV socket area carefully to ward off corona or leakage in this area. When installing the filter, be sure to short the input pigtail to fully discharge the capacitors in the filter. Just another way to avoid the needless loss of a FET.


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