Dubois-Reymond Inductor
Historical document, translated for reference. It reflects medical knowledge of the 1920s–30s and is not medical advice.
Summary
The Dubois-Reymond inductor is a medical device used for laboratory and clinical purposes in electrodiagnosis and therapy. It features a sled-like mechanism that allows the secondary coil to move closer to or farther from the primary coil, enabling approximate dosing of induction current based on their distance.
Encyclopedia entry (1928–1936)
Dubois-Reymond Inductor, a medical inductor used for laboratory and clinical purposes (electrodiagnosis and therapy). The name 'sled' comes from the device in the form of sled runners, on which the secondary coil can move and thereby be moved away from or brought closer to the primary coil, with the distance between the coils measured by a millimeter scale located next to the runners. This device makes it possible to approximately dose the strength of the induction current, which is inversely proportional to the distance between the coils. The current powering the apparatus, entering the primary coil, is uniformly interrupted and closed (20 to 200 times per second) by means of an electromagnetic Wagner or Nef hammer, as a result of which closing and opening induction currents (faradic current) of high voltage are generated in the secondary coil.
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“Dubois-Reymond Inductor.” Soviet Medical Encyclopedia. English translation of Bolshaya Meditsinskaya Entsiklopediya, 1st ed. (Moscow, 1928–1936), ed. N. A. Semashko. https://sovietmedicalencyclopedia.pages.dev/article/dubois-reymond-inductor/