Direct Current X

Alternate CurrentVirgilio Alves

SummaryWhat are DC and AC?

Who were Thomas Edison and Nikola Tesla?

Why does DC and AC turns rivals?

World’s Columbian Exposition

Conclusion

Direct Current

The flow of charge is always unidirectional

Alternate Current

Flow of electric charge periodically reverses direction.

Waveform: Current X Time

Thomas EidsonAmerican inventor and

businessman.

1847-1931

1093 patents

Main Inventions

Lamp Phonograph

Nikola TeslaWas born in Austrian Empire

and when he comes to America, He was 28 years old.

1856-1943

300 patents

Main Inventions

Induction Motor Tesla Coil

http://youtube.com/v/bJ0OPhHYEeM

Transmission From Niagara Falls to Buffalo-NY

Big transmission power line

Changed the type of current

Tactics used by Edison to defame Direct Current:

Electric Chair

Electric Chair

Topsy Electrocution

World’s Columbian ExpositionIt happened in

Chicago, 1893It was essential to

the type of current chosed

Nikola Tesla lit all fair with Alternate Current

Which one is the best current?

Both are essential to us!!!!!Batteries of car

Batteries of Cellphones

Electronic Products

Electricity’s transmission

Industries

Public transportation (trains)

THANK YOU!!!