What are LDC Dunlab tubes? They were used in UP No. 80 (later 8080) an experimental coal-fired gas-turbine-electric locomotive that ran in the early 1960s. A Google search on Dunlab tubes was fruitless.

hankmorris@earthlink.net

> What are LDC Dunlab tubes? They were used in
> UP No. 80 (later 8080) an experimental
> coal-fired gas-turbine-electric locomotive
> that ran in the early 1960s. A Google search
> on Dunlab tubes was fruitless.
Possably they are thyraton tubes. A thyraton tube is basically a mercury vapor rectifier with a control grid. A small amount of power applyed to the grid controls a large amount of power on the plate. Tubes like this were popular in motor control circuts.

http://www.themachineryworks.com
hgorin@ix.netcom.com

> Possably they are thyraton tubes. A thyraton
> tube is basically a mercury vapor rectifier
> with a control grid. A small amount of power
> applyed to the grid controls a large amount
> of power on the plate. Tubes like this were
> popular in motor control circuts.
Thanks, but the have something to do with gas flow. However, the article I was reading didn't go into any detail, preferring to assume that simply everybody knew what a Dunlab tube was.
I hate to disappoint the author, but I know I don't.

hankmorris@earthlink.net