on Rotary Converter, IRT Subway Substation 13, Midtown Manhattan, 2017. · c/photography · 1 pts · 1y@mattblaze@federate.social haha I came to this thread thinking "didn't they use mercury arc rectifiers, like DC elevators and such?" and learned that they didn't! So thanks for that. 😋
@mattblaze@federate.social haha I came to this thread thinking "didn't they use mercury arc rectifiers, like DC elevators and such?" and learned that they didn't!
So thanks for that. 😋