These days, LED lights are becoming more and more popular as they are generally brighter and require less energy than regular lights. They are found in more and more professions, being used for more and more different tasks.
So what are LEDs? LED stands for light emitting diodes. They are essentially tiny light bulbs that fit snugly into an electrical circuit. However, they differ from incandescent bulbs because they don't have filaments that burn out. And as a result, they don't get that hot either. The way they illuminate is by way of movement of electrons in a semiconductor material. A semiconductor is a solid state substance that can be changed through electricity. A conductor is the mid point between conductors and insulators. In layman's terms, a semiconductor has differing abilities to conduct electric currents. LEDs are also capable of lasting as long as a standard transistor.
Semiconductors with extra electrons are referred to as N-type material, due to their extra negative charge. Free electrons move from a negatively charged area to a positively charged one. P-type material are semiconductors with extra holes. This enables electrons to jump from hole to hole. Why is this information important? Diodes are comprised of a section of N-type material bonded to a section of P-type material. The electrodes are placed on both ends. This configuration forces electricity conduction in one direction. When there is no voltage applied, electrons from the N-type material fill holes from the P-type material, which forms a depletion zone.
In this state, the semiconductor is at its original insulating state, and there are no free electrons or empty space for electrons, so there is no charge flow. In order for there to be flow, electrons must move from N-type to P-type, and the holes must move in the opposite direction. You do this by connecting the N side to a negative circuit and the P side to the positive. The voltage difference enables electrons in the depletion zone to begin to move freely. This interaction between electrons and holes creates light.
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So what are LEDs? LED stands for light emitting diodes. They are essentially tiny light bulbs that fit snugly into an electrical circuit. However, they differ from incandescent bulbs because they don't have filaments that burn out. And as a result, they don't get that hot either. The way they illuminate is by way of movement of electrons in a semiconductor material. A semiconductor is a solid state substance that can be changed through electricity. A conductor is the mid point between conductors and insulators. In layman's terms, a semiconductor has differing abilities to conduct electric currents. LEDs are also capable of lasting as long as a standard transistor.
Semiconductors with extra electrons are referred to as N-type material, due to their extra negative charge. Free electrons move from a negatively charged area to a positively charged one. P-type material are semiconductors with extra holes. This enables electrons to jump from hole to hole. Why is this information important? Diodes are comprised of a section of N-type material bonded to a section of P-type material. The electrodes are placed on both ends. This configuration forces electricity conduction in one direction. When there is no voltage applied, electrons from the N-type material fill holes from the P-type material, which forms a depletion zone.
In this state, the semiconductor is at its original insulating state, and there are no free electrons or empty space for electrons, so there is no charge flow. In order for there to be flow, electrons must move from N-type to P-type, and the holes must move in the opposite direction. You do this by connecting the N side to a negative circuit and the P side to the positive. The voltage difference enables electrons in the depletion zone to begin to move freely. This interaction between electrons and holes creates light.
Find red led flashlight at http://www.red-ledflashlight.com
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