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Summary
| Description |
English: Early induction coil, 1838, by Charles G. Page (US). Exhibit in National Museum of American History, Washington, DC, USA. The arm dipping into the glass cup was an early "contact breaker" or "interrupter" which repeatedly broke the current to the primary to create the flux changes needed for induction. The cup was filled with mercury, and the end of the wire from the battery was in it, acting as a switch to complete the primary circuit. When battery power was supplied current flowed through the arm to the coil primary, creating a magnetic field in the coil. This attracted the iron piece on the left end of the arm next to the coil. This lifted the right end of the arm out of the mercury cup, breaking the primary circuit. The magnetic field in the coil collapsed, releasing the arm, which fell back into the mercury, completing the circuit again, and the cycle repeated. Each time the arm lifted out of the mercury, breaking the primary circuit, the magnetic flux change induced a high voltage pulse in the secondary of the coil.
Deutsch: Funkeninduktor. 1838, Charles G. Page (US). National Museum of American History, Washington, DC, USA.
Français : Bobine de Ruhmkorff. Créé par Charles G. Page (États-Unis) en 1838. National Museum of American History, Washington, DC, États-Unis.
Nederlands: Vroege uitvoering (1838) van een vonkinductor/Ruhmkorffinductor, gemaakt door Charles G. Page (VS), Tentoongesteld in het National Museum of American History, Washington, DC, VS. |
| Date | |
| Source | Self-photographed |
| Author | Daderot |
| Permission (Reusing this file) |
Public domain. |
Licensing
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I, the copyright holder of this work, release this work into the public domain. This applies worldwide. In some countries this may not be legally possible; if so: I grant anyone the right to use this work for any purpose, without any conditions, unless such conditions are required by law. |
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 16:26, 30 January 2011 | | 3,158 × 2,352 (1.78 MB) | Daderot |
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