Tesla Systems is an American physicist and electrical engineer who made the largest contributions to the development of the use of electrical alternating current. Although not as well known as Thomas Edison, without Nikola's contributions to the field of electricity, our lives would not be the same today. Alternating current electricity (more commonly known as AC current) is what is used in homes and businesses throughout the world today. Tesla Systems invented the alternating current induction generator, a device that changes mechanical energy into alternating current electricity, and the Tesla coil, a transformer that changes the frequency of alternating current. The unit of measure known as the TESLA was named after this great inventor. Tesla Systems is responsible for several other revolutionary concepts in his time - please see our links page for more information. We salute this amazing and gifted man and consider it a privilege to use his name for our organization.