Even if you aren’t a tube aficionado, you can’t help but be mesmerized by the blue glow inside a mercury vapor rectifier when it operates. It looks less like early 20th century tech and more like ...

Even if you aren’t a tube aficionado, you can’t help but be mesmerized by the blue glow inside a mercury vapor rectifier when it operates. It looks less like early 20th century tech and more like ...

In the Feb. 1 issue we began a discussion of the evolution of transmitter power supplies. One of the more infamous radio transmitter motor-generator installations was in Las Cruces, N.M., at KOB, when ...

Plastic 4-pin base, top contact, S-shaped envelope. Donor’s card reads: “Half-wave mercury vapor rectifier made by Westinghouse for the US government during World War II. This tube is the Westinghouse ...

They’ve been a mainstay of Sci-Fi props for years but you’ll be hard pressed to find someone on the street that can tell you what they actually do. They’re Mercury Arc Rectifiers and our friends at ...