1. U3e-L8 1.What does the following schematic symbol represent? 2.What does the following schematic symbol represent? 3.How many volts are typical in a residential electrical outlet? 4.What do graphs of DC and AC power sources look like? Why? March 12, 2008 DRILL DC Power Supply AC Power Supply 120 volts

2. If voltage is constantly 1.5 V, what does its graph over time look like? Direct Current Time (seconds) Voltage (volts) 0 2 4 6 8 10 12 14 1 2 3 1.5 V U3e-L8

3. If voltage is alternating 120 V to -120 V, what does its graph over time look like? Alternating Current Time (seconds) Voltage (volts) 0 2 4 6 8 10 12 14 -120 0 120 +/-120 V U3e-L8

4. Michael Faraday (1791-1867) –London, England. –Physicist and Chemist First person to successfully create an electric motor. Discovered that electric currents create a magnetic field, and vice versa. Electric Motors

5. To draft and model a simple electric motor that will spin in response to 9 volts of Direct Current. To demonstrate the principle of electromagnetism. To use principles of electromagnetism to produce a mechanical result. Purpose of Lesson U3e-L8 Motor Design, Design Drawings, and Lesson Courtesy of Fred Nastvogel stem.fnastvogel@comcast.net

6. Orthogonal Views of Product SKETCH and LABEL Motor Design, Design Drawings, and Lesson Courtesy of Fred Nastvogel stem.fnastvogel@comcast.net

7. U3e-L8 Orthogonal Views of Product SKETCH and LABEL Motor Design, Design Drawings, and Lesson Courtesy of Fred Nastvogel stem.fnastvogel@comcast.net

8. Draft the given shapes on paper. Be precise with your measurements and your drawings. CLASSWORK 1 DRAWING 2 DRAWINGS 1 DRAWING of EACH Motor Design, Design Drawings, and Lesson Courtesy of Fred Nastvogel stem.fnastvogel@comcast.net