Collectors of old vacuum tube AM radio sets sometimes come across sets designed to operate off of 32V DC. Problem usually is that these sets had normal looking 120V 2 prong plugs, and subsequent owners (like someone inherits gramdma's radio) plug them into 120V AC thus blowing them up....
Once my brother acquired some 32V or was it 48V light bulbs. They had the usual edison base 120V bulbs have, and I thought they were regular 120V bulbs. Flash---pop! Thing is he stored them with the 120V bulbs, and were unmarked.... How was I supposed to know!
