05-22-2009, 03:47 PM
I'd have to agree with fast blow for all tube applications. They are easy to come by too. 1 amp is ususally sufficient for small AC-DC sets. It's not a bad idea to put another fuse in the B+ circuit. This can be a 1/2 amp or smaller depending on the draw. Beats scouring Epay for yet another obscure tube.