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Direct Current Electricity

Batteries were the second device invented for producing electricity, in the course of a debate between Galvani and Volta. Alessandro Volta published his work, including a description of the Voltaic Pile, in an 1800 issue of the Proceedings of the Royal Society. They gave an electrical output we describe today as DC electricity, direct current. Soon Faraday invented the generator or magneto, which was also used to produce DC electricity.

B1 - Batteries / Electrochemical cells
B1.1 - general usage
B1.1.1 - Voltaic pile
B1.1.2 - "crown of cups"
B1.1.3 - one-electrolyte wet cell (or battery)
B1.1.4 - two-electrolyte wet cell (or battery)
B1.1.5 - battery jars
B1.1.6 - dry cell (or battery of dry cells)
B1.2 - medical usage
B1.2.1 - medical battery box (wet cells)
B1.2.2 - medical battery box (dry cells)
B1.2.3 - electric belts
B1.2.4 - multimetallic "Voltaic amulets"
B2 DC - generators and sources (other than cells/batteries)
B2.1 - homopolar generators
B2.2 - generators with rectifying commutators
B2.3  - rectifiers (for use with AC power)
B3  - measuring devices
B3.1 - current measuring
B3.1.1 - compass galvanometers
B3.1.2 - d'Arsonval galvanometers
B3.1.3 - string galvanometers
B3.1.4 - mirror galvanometers (incl. d'Arsonval)
B3.2 - voltage measuring
B4 - demonstration devices



The Bakken
A Library and Museum of Electricity in Life

3537 Zenith Avenue South
Minneapolis, MN 55416-4623, USA

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© The Bakken Updated: April 6, 2007

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