PMM (Pico Mains Monitor)

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Senior Member

Joined: 11/09/2011
Location: Australia
Posts: 257
Posted: 02:33am 17 Sep 2021      

Moons ago when I was working and a Field engineer, much of the instruments I worked on were in Hospital or university labs. Most contained HV supplies for Photo Multiplier Tubes, which had a habit of failing overnight or the weekend as the mains supplies went up when the day time loads came off, If suspected we would perhaps put a logger on the supply and 254-258vac would not be unusual killing supplies or dynode strings. If it wasn't that maybe the odd clean of fried Mice