Shake Flashlight. North Dakota State College of Science Applied Science and Technologies. www.NDSCSnano.com. Electrical Basics. Current is the flow of electrons Voltage is electrical pressure Resistance is the opposition to the flow of electrons
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North Dakota State College of Science
Applied Science and Technologies
A magnetic field is generated around a wire as current flows through it.
The basic principle of "moving magnet plus coil makes electricity" is the foundation for electrical generators, so in a sense this is old technology.
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.
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 C1. The switch turns on the LED.
Full-wave Diodes Capacitor (Battery)