DEMO HOUR: Electromagnetic HarvesterIssue: XXVI.3 May - June 2019
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. Phys.org. Feb 12, 2013; https://phys.org/news/2013-02-german-student-electromagnetic-harvester-recharge.html
|Energy-harvesting farms around transformer stations.|