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HARMONICS - Understanding the Facts Richard P. Bingham Abstract Understanding what is important to know almost harmonics can be challenging for those without extensive electrical engineering backgrounds. In this two part series of holds, the first article exit help to clarify what those important facts are, and the second depart help tell when to raise the flag. What is a Harmonic The everyday definition for a harmonic is a sinusoidal element of a periodic wave or quantity having a oftenness that is an integral multiple of the wakeless frequency. [1]. Some identifyences key to clean or pure cater as those without some(prenominal) harmonics. But much(prenominal) clean wave forms typically only exist in a laboratory. Harmonics cede been around for a life-size time and will continue to do so. In fact, musicians study been aware of such since the invention of the first absorb or woodwind instrument. Harmonics (called overtones in music) are responsible for what makes a simple machine horn sound want a trumpet, and a clarinet like a clarinet. Electrical generators try to produce electric power where the voltage waveform has only one frequency associated with it, the first harmonic frequency. In the North America, this frequency is 60 Hz, or cycles per second. In European countries and other parts of the world, this frequency is usually 50 Hz.

Aircraft very much uses 400 Hz as the fundamental frequency. At 60 Hz, this means that sixty times a second, the voltage waveform increases to a maximum positive value, because decreases to zero, further change magnitude to a maximum cast out valu e, and then back to zero. The arrange at wh! ich these changes occurs is the trigometric function called a sine wave, as shown in figure 1. This function occurs in many natural phenomena, such as the speed of a pendulum as it swings back and forth, or the way a string on a voilin vibrates when plucked. 1.1 0.9 0.7 0.5 0.3 0.1 -0.1 -0.3 -0.5 -0.7 variety 1. Sine Wave -0.9 -1.1 The frequency of the harmonics are different,...If you want to get a full essay, entrap it on our website: BestEssayCheap.com

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