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Www.NDSCSnano.com Shake Flashlight North Dakota State College of Science Applied Science and Technologies www.NDSCSnano.com.

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Presentation on theme: "Www.NDSCSnano.com Shake Flashlight North Dakota State College of Science Applied Science and Technologies www.NDSCSnano.com."— Presentation transcript:

1 www.NDSCSnano.com Shake Flashlight North Dakota State College of Science Applied Science and Technologies www.NDSCSnano.com

2 Electrical Basics Current is the flow of electrons Voltage is electrical pressure Resistance is the opposition to the flow of electrons Ohm’s Law: V = I x R (voltage = current x resistance) Closed Circuit

3 www.NDSCSnano.com Basic Electrical Principle A magnetic field is generated around a wire as current flows through it. http://www.educypedia.be/electronics/javaelectricity.htm

4 www.NDSCSnano.com Shake Flashlight The basic principle of "moving magnet plus coil makes electricity" is the foundation for electrical generators, so in a sense this is old technology. http://www.msscweb.org

5 www.NDSCSnano.com Voltage Generation When a magnet passes through a tightly-wound coil of insulated wire, a voltage is generated. As the magnet changes direction, so does the polarity of the voltage. This action generates an AC voltage. http://www.msscweb.org

6 www.NDSCSnano.com Schematic The AC voltage is sent to a full- wave bridge to convert the AC to a pulsating DC voltage. This energy is stored in Capacitor C 1. The switch turns on the LED. http://www.msscweb.org http://www.play-hookey.com/ac_theory/ps_rectifiers.html

7 www.NDSCSnano.com Components http://www.msscweb.org Full-wave DiodesCapacitor (Battery)

8 www.NDSCSnano.com www.ndscs.edu


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