Hans Rein (electrical engineer)

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Hans Rein (born May 8, 1879 in Eisenach , † April 11, 1915 in Maizeray , near Verdun ) was a German electrical engineer . He is known through his contributions as a pioneer of early radio technology and is considered the developer of the "multi-tone" transmitters.

Life

Hans Rein was the eldest son of the Jena pedagogue and university professor Wilhelm Rein (1847–1929) and his wife Marianne geb. von Heerwart (1859–?). He first attended high school until Easter 1899. Then he studied electrical engineering in Jena, Berlin - Charlottenburg and Darmstadt . After completing his studies, he worked as a helper for Karl Wirtz in the Electrotechnical Institute of the University of Darmstadt. There he received a patent early on. In 1910 he published the book “Das radiotelegraphische Praktikum at the Technische Hochschule in Darmstadt”, which was out of print after just one year, about his experiments and the further development of early radio transmitters that was driven forward with them. A second edition appeared in 1912.

In May 1909 he took a position in the laboratory for wireless telegraphy at C. Lorenz AG in Berlin. There he worked very closely, especially with Otto Scheller . The focus of his work was the improvement of the arc to use the license for the arc transmitter of the Danish inventor Valdemar Poulsen , which C. Lorenz had acquired three years earlier. After the founder of the laboratory, Walter Hahnemann, left the company to serve in the Imperial Navy for a few years , Hans Rein became the new director.

From August 4, 1914, Hans Rein also served as a soldier in World War I and was awarded the Iron Cross as a first lieutenant . At the end of March 1915 his unit was relocated to Sedan and on April 11, 1915 he died in a grenade near Maizeray. He was buried in the Dompierre cemetery, east of Verdun.

Services

With the support of his colleague and friend Otto Scheller, Hans Rein developed, among other things, the arrangement of a tone and a high-frequency oscillating circuit, marketed by C. Lorenz as a "multi-tone" transmitter, which were connected to a direct current transmitter. Eight tones of different heights could be set with a keypad, so that, in addition to the Morse code, a meaning could also be agreed for the selected pitch.

He played a key role in the construction of an electrostatic high-frequency machine based on the technology invented by Rudolf Goldschmidt , and also in the field of "high-frequency measurements", as the later radar technology was initially called, he made numerous improvements and suggestions for new facilities. The “Textbook of Wireless Telegraphy”, which he wrote but was only published by Karl Wirtz after his death, was a much-cited standard work of the still young technology.

Works

  • The radiotelegraphic internship at the Technical University in Darmstadt , Julius Springer, 1910.
  • The radiotelegraphic direct current sound transmitter (dissertation), Dr. by Hermann Beyer & Sons, 1912.
  • Textbook on wireless telegraphy , published after the death of the author by Karl Wirtz, Julius Springer, 1917.

Web links

Individual evidence

  1. ↑ Reich patent no. 199.489 Device for generating undamped electrical oscillations, especially for the purposes of wireless telegraphy and telephony from December 19, 1906. In: Zeitschrift für Schwachstromtechnik , year 1908, p. 282 - ( snippet view in the Google book search)
  2. ↑ Elektrotechnische Zeitschrift , Volume 33 (year 1912), Association of German Electrical Engineers (VDE) 1912, p. 447 - ( snippet view in the Google book search)
  3. ↑ Hans-Joachim Ellissen: Wireless telegraphy with dampened waves (III) . On: Seefunk & Seeschiffahrt (Seefunknetz.de), accessed on June 5, 2016
personal data
SURNAME Rein, Hans
BRIEF DESCRIPTION German electrical engineer and radio pioneer
DATE OF BIRTH May 8, 1879
PLACE OF BIRTH Eisenach
DATE OF DEATH April 11, 1915
Place of death Maizeray