20-03-2014, 12:16 PM
Points taken about fusing both connections to the Mains TX primary, folks. All I can say is that Hacker did it that way in some of their record players. I have recently fitted an IEC mains connector to a Grenadier in which the L & N leads to the TX Primary were both fuse protected by Hacker. Returning to the Ferranti 255, it's a conventional valved receiver using an EZ80 full wave rectifier, so obviously has a centre-tapped secondary winding into which a fuse could be inserted.
As to fused and unfused mains plugs, I certainly know that most, if not all, Continental plugs are unfused, but back in the 50s & 60s there must have been many UK homes still using the unfused 5 & 15 Amp mains plugs, meaning that many popular radios (and other appliances) were relying on the fuse links at the ring main for protection.
As to fused and unfused mains plugs, I certainly know that most, if not all, Continental plugs are unfused, but back in the 50s & 60s there must have been many UK homes still using the unfused 5 & 15 Amp mains plugs, meaning that many popular radios (and other appliances) were relying on the fuse links at the ring main for protection.
