12-24-2016, 12:05 AM
I would just put a fuse in the primary lead of the power transformer and stop worrying about it. This applies either to the 6X5 tube or a replacement silicon rectifier.
Rate the fuse marginally higher than the maximum current draw of the radio under normal operation. If the rectifier should short, it will blow the fuse within a few seconds, protecting the transformer from any sustained overload.
Rate the fuse marginally higher than the maximum current draw of the radio under normal operation. If the rectifier should short, it will blow the fuse within a few seconds, protecting the transformer from any sustained overload.