[Central-Electronics] MM-2 HV caps

Jon Kannegaard k6jek at comcast.net
Thu May 5 19:03:19 EDT 2022


They’re killing the transformers, those HV filter caps. Not mine, not yet, anyway, but I’ve heard of a few. The failure mode is a short with smoke.  They are humdinger caps,  paper and oil can caps rated at over a kilovolt. They are now over 60 years old.   Even humdinger caps can fail. I think it’s time to preemptively replace them.

But with what? They are 1 uF @ 1000V and .5 uF @1500V with unknown current specs. Mine are CDE. CDE still makes something similar. They aren’t cheap and may require some fiddling to mount them.  Are these the answer?

https://www.mouser.com/ProductDetail/Cornell-Dubilier-CDE/SCRN240R-F?qs=9I6i58cghusvBOSErkJytw%3D%3D


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