Demo Hour

DEMO HOUR: Electromagnetic Harvester

Issue: XXVI.3 May - June 2019
Page: 8
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Dennis Siegel

We are surrounded by electromagnetic fields, both natural and artificial. Many are created as by-products of our appliances and electrical infrastructure. Some can be transformed into usable current by means of coils and high-frequency diodes.

The Electromagnetic Harvester is designed to tap into electromagnetic fields to charge a regular battery. You can capture energy from a toaster, cellphone, or overhead wire by holding the Harvester directly into the source's electromagnetic field. By exploiting these sources, it creates an awareness of the invisible electromagnetic space while also giving it a spatial dimension.

Vanhemert, K. A tiny box that charges AA batteries from electromagnetic felds. Fast Company. Jan. 23, 2013;

Yirka, B. German student builds electromagnetic harvester to recharge a battery. Feb 12, 2013;

Dennis Siegel
[email protected]

ins01.gif Energy-harvesting farms around transformer stations.