Electromagnetic generator - Vintage Nostalgia
Electromagnetic generator

Illustration from middle ‘800: a not better specified electro-magnetic generator used to produce an electric arc.

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Ruhmkorff inductor - Vintage Nostalgia
Ruhmkorff inductor

Illustration from middle ‘800: electrical transformer used to produce an alternate very high voltage from a low-voltage direct current, patented in 1851 by Heinrich Ruhmkorff, German inventor.

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