Articles
Our articles contain background information on valve technology, historical milestones and applications.
Last updated 07 September 2008
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Links to All Classified Indexes Another way to locate all indexes Additional Information Short Technical Features Some Important British Valves Keith Thrower's selection of landmark developments Manufacturers of Valves. Basic details of the main companies References. Data Sources used in the Museum 1934 - Frequency Changing From the Mullard 1934-35 Valve catalogue 1934 - Mullard 2 Volt Battery Valves From the Mullard 1934-35 Valve catalogue 1934 - Mullard AC Mains Valves From the Mullard 1934-35 Valve catalogue 1934 - Mullard Universal Valves (AC/DC) From the Mullard 1934-35 Valve catalogue An Acorn Valve Datasheet From a valve packed in 1936 Basic Introduction to the Valve From a beginners series in 1966 Basic Technical Aspects of Valves How a valve works The Beam Tetrode. Re-published from The BVWS Buletin Vol 33 No. 2. A Classic Unmasked The inside of an EL37 output pentode The Dawn of Broadcasting in the UK The earliest history of Radio Broadcasting EE50 Operation A secondary emission pentode explained. The EM34 in Pictures A range of implementations for this tuning indicator Electron Multipliers An avalanche of electrons The Evolution of Our Photographs See how digital photography compares to film The Famous EF50 Valve of WW2. How Television helped the seeing eye of RADAR The First Airborne Radar. From a roomfull to a doorknob The First All Valve Computer. The Colossus rebuild at Bletchley Park The First Kurhaus Radio-Concerts. Part of the history of Dutch broadcasting The French 'R' Valve. The origins of the famous R Type The History of the UK Valve An excellent book - a `must have' How To Build a Two Valve Set A practical project from cigarette cards in 1929 A Low Cost Valve Amplifier. A design from 1969 published in Practical Wireless The Making of the EF80. Mullard produced a boxed set of components and a film Marconi the Pioneer Brief account of the early spark gap experiments Metals used in Valve Manufacture Taken from Vacuum Tubes by K Spangenberg (1948) {1001}. Metal Striptease! We undress an American 6J5 The Metal Valve A contemporary account of the Catkin valve. The New EL34 Audio Pentode. The original press release details The Origin of the Valve. A few words from the inventor. The Osram Miniature Valve Story. An extract from an Osram data book. Osram Valves. The Early Days The Pentode. A 1933 article by Stanley Mullard. Pioneer. A short biography of Sir John Ambrose Fleming. The Round Valves. A brief history of Captain Round's valves. The R4, R4A, R4B and R4C. A specialist WWI valve series for heterodyne receivers. Sealing of Glass to Other Materials. Taken from Vacuum Tubes by K Spangenberg (1948) {1001}. The Story of the Valve This makes a perfect introduction to the valve and its history Travelling Wave Tube Amplifiers Theory and practice of these high gain microwave amplifiers Valves for Single Sideband Reducing ageing in balanced modulators |