813 Amp Project

May 29, 2006: The initial bench tests with a bleeder load looked good so I need to figure out how to package these large components. I would like to be able to see the blue glow of the mercury vapor rectifiers and I found a small panel with a cane metal screen so I could view the tubes. But now I need a taller cabinet... and some mechanical work to fit everything in there with a new control circuit. I fabricated an aluminum plate to mount the tubes to replace the wooden board.

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		May 29, 2006: The initial bench tests with a bleeder load looked good so I need to figure out how to package these large components. I would like to be able to see the blue glow of the mercury vapor rectifiers and I found a small panel with a cane metal screen so I could view the tubes. But now I need a taller cabinet... and some mechanical work to fit everything in there with a new control circuit. I fabricated an aluminum plate to mount the tubes to replace the wooden board. CLICK ON PICTURES TO ENLARGE
		This is the "new" slightly larger cabinet and there is just enough room at the top for the RF deck. I will replace the red cane metal at some point but at least I can get a view of the rectifiers. I took the variac apart and fully tested it and it is now operating. The control circuit and fusing needs to be changed. The meter panel tested OK but the voltmeter reads low by about 10 percent. I will adjust the meter resistors later.
		One of my salvaged rack mount cabinets had some screen material for the back of the cabinet which just fits. The power supply will be about 3 times the physical space as the RF deck.