Tag: Vacuum_Tube > Made up in Britain: Vacuum Tube : John Ambrose Fleming 1904
Vacuum Tube
Inventor
Inventor John Ambrose Fleming
John Ambrose Fleming
Born29 November 1849
Lancaster
Died18 April 1945 | Age 95
Sidmouth

John Ambrose Fleming 1904

Technology:1900s

Sir John Ambrose Fleming ( 1849 – 1945) born in Lancaster, Lancashire, England invented the first thermionic valve or vacuum tube, or just valve as it was known. He received a patent on November 16, 1904.

What they do
Valve diode
Valve diode

Vacuum tubes or thermionic valves are based around the concept of thermionic emission. Using two electrodes enables diodes to be made that can rectify signals.

 

New Dawn
Flemings early valve
Flemings early valve

The vacuum tube brought the dawn of the age of electronics. Its invention enabled the wireless technology of the day to move forward. The valve was pivotal in laying the foundations of what we call electronics technology today.
This invention made possible or improved:
Radio
Television
Radar
Sound recording and reproduction
Telephone networks,
Analogue and Digital computers


War Needs
The outbreak of World War 2 was a key point in thermionic valve history. These devices came into their own as they were needed for electronic equipment of all sorts from radio receivers to transmitters, radar sets, electronic warfare equipment, telecommunications repeaters and much more.

Tags: Valve Electronic Tube Thermionic amplification

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In History
  • 21 September 1936.
    This month 87 years ago the world lost Frank Hornby
  • 01 September 1976.
    This month 47 years ago the world lost Percy Shaw
  • 10 September 1960.
    This month 63 years ago the world lost Harold Gillies
  • 01 September 1806.
    This month 217 years ago the world lost Edward Nairne
  • 21 September 1836.
    This month 187 years ago the world lost John Stafford Smith
  • 01 September 1846.
    This month 177 years ago the world lost Edwin Beard Budding
  • 25 September 1936.
    On this day 87 years ago William Horlick
  • Christmas Cracker. 200 years ago 18/10/1823 Tom Smith was born
  • 17 September 1877.
    This month 146 years ago the world lost William Henry Fox Talbot
  • 18 September 1938.
    This month 85 years ago the world lost William Fletcher
  • Marshall Amplification. 100 years ago 29/7/1923 Jim Marshall was born
  • 10 September 1938.
    This month 85 years ago the world lost Charles Cruft
  • 18 September 1967.
    This month 56 years ago the world lost John Cockcroft
  • 16 September 1890.
    This month 133 years ago the world lost Louis Le Prince
  • 50 years ago in 1973 The first stable LCD is announced to the world.
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