| What Home Entertainment Owes to Intrinsicality |
OK, try and ignore the crap title. This two-part artical from Mullard contains some interesting details on the prodction of CRT's and valves at the start of the 1960's. |
| Power Grid Valves |
A fascinating paper presented by Jack McCullough (of Eimac) in 1965. The history of these valves plus a look forward to the future (from 1965's perspecitive). |
| Materials and Shapes of Vacuum Tube Heaters | An article all about the materials and construction of valve heaters originally published in the magazine Electronic Industries in December 1961 |
| Getter Materials | An article on the selection of materials for use as getters, originally published in "Electronics" magazine in October 1950. |
| Microphonics | Extracts from some research undertaken by Mullard in 1962 into the effect of valve construction upon sensitivity to microphonics. |
| Valves at U.H.F. | An artical written in 1954 on recent developments of UHF valves and describing the Magnetron and Klystron. |
| Guided Grid Valves | A valve development from around 1960 aimed at high frequency operation in TV tuners. |
| The Nuvistor | The nuvistor was a miniature high-frequency valve introduced fairly late in the life of valve technology. |
| The Manufacture of Junction Transistors |
A Mullard artical on the manufacture of junction transistors such as the OC44/45 and OC71 etc you find in many early transistor sets. Its amazing just how labour-intensive the process was. OK, so its not valves but it is valve era. |
| Secondary Emission and the Mullard EE50 Valve |
A description of the EE50 secondary emission valve released circa 1939. |
| DATE | FILE | TITLE |
| Nov. 1962 | ValveMicrophony_pt1.pdf [1.6MB] | "Valve Microphony - Part 1" |
| ValveMicrophony_pt2.pdf [420KB] | "Valve Microphony - Part 2" | |
| Aug. 1963 | electro.pdf [830K] | "Electrometer Valves". Covers the application of the ME1401, ME1402, ME1403 and ME1404. |
| Sept. 1967 | ImConvTubes.pdf [1.0MB] | "Diode Image Converter Tubes and their Application" |
| Jan. 1971 | plump1.pdf [1.5MB] | "30mm Plumbicon camera tubes with fibre-optic faceplate, anti-comet-tail gun, and lightpipe" |
| plumb2.pdf [790KB] | "One-inch Diameter Plumbicon camera tube type 19XQ" |
The following PDF's used to be hosted on John Atwood's One Electron website but are now hosted here, with permission.
| acorn.pdf | 1.65Mb | "Recent Developments in Minature Tubes", a mid/late 1930's paper on the "Acorn" style miniature valves. |
| cathode.pdf | 1.52Mb | "What Cathode is Best for the Job", from Electronic Industries magazine for April 1959 |
| miniature.pdf | 830Kb | "Development and Production of the New Miniature Battery Tubes" originally printed by RCA in April 1940. |
| trustworthy.pdf | 2.8Mb | "Developments in Trustworthy-Valve Techniques" from Electrical Communication magazine for September 1954. |
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Last updated 12th December 2009 |