Jun 17th, 2015
Studypool Tutor
Price: $10 USD

Tutor description

Automatic water level controller circuit is a simple engineering project. It can automatically switch ON and OFF the domestic water-pump set depending on the tank water level. We can implement this motor driver circuit at our home using cheap components.

Word Count: 13563
Showing Page: 1/17
The 1800s (Early History and Great Fervor)1844 - - First public demonstration of Morse's electric telegraph, Baltimore to Washington.1847 - - Alexander Graham Bell born in Edinburgh, Scotland.1854 - - Thomas A. Watson born.1858 - - First Atlantic telegraph cable completed but failed after 26 days due to the voltage being toohigh.1861 - - Beginning of coast to coast telegraph communication in the United States.1866 - - Permanent communication is established by wire from the United States to Europe with thecompletion of the second Atlantic telegraph cable.1869 - - The partnership of Shawk and Barton is formed to take over an electric shop which WesternUnion Telegraph Company has abandoned. This partnership ultimately becomes Western ElectricCompany. George Shawk eventually sells his interest in the firm to Elisa Gray. The firm becomesGray and Barton and remains that way for two years. Gray devoted himself totally to electricresearch and was working on a harmonic telegraph at the same time as Bell. The idea of transmittingsounds occurred to him and he filed a caveat ( a confidential report of an invention which is not fullyperfected) in the U.S. Patent Office. His caveat indicates that he was on the same track as Bell buthad not worked out his transmitter as fully. On the same day, a few hours earlier, Bell filed a patentapplication for his telephone. Gray when on to invent the telautograph which transmits facsimilehandwriting and drawings. Gray died in 1901.1

Review from student

Studypool Student
" This tutor is great! "
Ask your homework questions. Receive quality answers!

Type your question here (or upload an image)

1824 tutors are online

Brown University

1271 Tutors

California Institute of Technology

2131 Tutors

Carnegie Mellon University

982 Tutors

Columbia University

1256 Tutors

Dartmouth University

2113 Tutors

Emory University

2279 Tutors

Harvard University

599 Tutors

Massachusetts Institute of Technology

2319 Tutors

New York University

1645 Tutors

Notre Dam University

1911 Tutors

Oklahoma University

2122 Tutors

Pennsylvania State University

932 Tutors

Princeton University

1211 Tutors

Stanford University

983 Tutors

University of California

1282 Tutors

Oxford University

123 Tutors

Yale University

2325 Tutors