They are watchingdyen49k@kbin.social to Lemmy Shitpost@lemmy.world – 1124 points – 11 months ago109Post a CommentPreviewYou are viewing a single commentView all commentsWhat's the last one? (Bottom right)A mercury arc rectifier. The mercury vapor is ionized, and used for increasing the current carrying capacity of the component – compared to how much a traditional valve design with complete vacuum would work. In short, it makes DC out of AC.1 more...Courtesy of google lens https://www.postalmuseum.org/blog/powering-mail-rail/ In short a rectifier for post office railway?! Edit: contents and Spelling1 more...
What's the last one? (Bottom right)A mercury arc rectifier. The mercury vapor is ionized, and used for increasing the current carrying capacity of the component – compared to how much a traditional valve design with complete vacuum would work. In short, it makes DC out of AC.1 more...Courtesy of google lens https://www.postalmuseum.org/blog/powering-mail-rail/ In short a rectifier for post office railway?! Edit: contents and Spelling1 more...
A mercury arc rectifier. The mercury vapor is ionized, and used for increasing the current carrying capacity of the component – compared to how much a traditional valve design with complete vacuum would work. In short, it makes DC out of AC.1 more...
Courtesy of google lens https://www.postalmuseum.org/blog/powering-mail-rail/ In short a rectifier for post office railway?! Edit: contents and Spelling
dyen49k@kbin.social to 
What's the last one? (Bottom right)
A mercury arc rectifier. The mercury vapor is ionized, and used for increasing the current carrying capacity of the component – compared to how much a traditional valve design with complete vacuum would work.
In short, it makes DC out of AC.
Courtesy of google lens
https://www.postalmuseum.org/blog/powering-mail-rail/
In short a rectifier for post office railway?!
Edit: contents and Spelling