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Robert von Lieben

1878–1913

Letter from Robert von Lieben, Berlin, to Richard Lieben 2 May 1909
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Biography

Robert von Lieben (September 5, 1878, in Vienna – February 20, 1913, in Vienna) was an Austrian entrepreneur, and self-taught physicist and inventor. Lieben and his associates Eugen Reisz and Siegmund Strauss invented and produced a gas-filled triode – the first thermionic valve with a control grid that was designed specifically for amplification rather than demodulation of signals, and is a distant ancestor of the thyratron. After Lieben's death, the "Lieben valve", which is also known in English as the "Lieben-Reisz valve" and in German as the "LRS-Relais" (Lieben-Reisz-Strauss relay), was used in the world's first continuous wave radio frequency generator designed for radio telephony.

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Sketches, letters, etc.

  • Letter from Robert von Lieben

    Robert von Lieben, recipient: Henriette von Motesiczky
    [1888–95]
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  • Letter from Robert von Lieben, Göttingen

    Robert von Lieben, recipient: Henriette von Motesiczky
    23 May 1900
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  • Letter from Robert von Lieben, Vienna

    Robert von Lieben, recipient: Henriette von Motesiczky
    24 April 1903
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  • Letter from Robert von Lieben, St Joachimsthal, to Richard Lieben

    Robert von Lieben, recipient: Richard Lieben
    8 August 1911
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