1. Electric Current and Transformers

2. Edison Inventor and Businessman Edison invents Direct Current
Phonograph, Camera (movie), Light bulbs
Edison invents Direct Current
Standard for all of the US
power plants could only send DC about a mile before the electricity began to lose power

3. Tesla Inventor, Electrical Engineer, physicist
Very theatrical
Moves to US to work with Edison
Invents Alternating Current
Much more efficient and powerful

4. AC/DC Direct Current – Useful, but not over long distances
Alternating Current – Much stronger and powerful over long spans

5. Transformers
Change energy levels
Can either be step up or step down

6. Transformers Drawn