1966 Mag: Build NE-2 Neon Bulb Computer - scan available

[William Donzelli]

>  6KB4 was the most common
> type--a large, octal-based unit with a peculiar cup-shaped grid more
> or less completely covering the cathode at the bottom of the tube and
> about a 3/8" air gap between that and the long tubular anode (like
> that on a 1B3, but much larger) connected to the top cap.  Rated for
> something like 20-30KV if memory serves and about 30W plate
> dissipation.

It should be noted that 6BK4Cs still have a little value, as they are
used in, of all places, some older semiconductor fab machines.

--
Will