Tube DIY Asylum

Posted by gusser (A) on December 26, 2011 at 16:26:55

In Reply to: RE: Observation .......... posted by Steve O on December 25, 2011 at 18:23:22

Before Xenon lamps took over they used carbon arc lamps in the projector. They ran on DC and were anywhere from 2kw to 10kw in some extreme cases - like Radio City Music Hall.

Motor generators were most popular but Mercury Vapor rectifiers were also used as they were more efficient. And at 2-10kw, they were quite large, like a 64oz soda bottle.

Radio and TV transmitters also used Mercury rectifiers into the 1970s.

Edits: 12/26/11   12/26/11   12/26/11

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