Download A Peek at Computer Electronics: Things You Should Know by Caleb Tennis PDF

By Caleb Tennis

Are you a programmer or machine fanatic? Do you are feeling pleased with tools, services, and variables? Do you need you knew extra approximately how the pc made all of it paintings? you can now. From simple electronics to complex desktop undefined, you’ll examine the magic at the back of the apparatus that makes all of it run.

If you’re into tinkering, or ever thought of it, this booklet explains the fundamentals of the way all of it works

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What this means is that if the transformer has the same number of coils of wire on both the primary and secondary sides, then the output voltage would equal the input voltage. However, if the transformer has twice as many coils on the secondary side, then the output voltage would be twice the input voltage. 16: Three Phase Power As you can imagine, the possibilities are endless. This very simple device provides an extremely easy way to step voltages down from the very high ones created by the power generation facility to the much lower ones needed by the consumer.

AC Waveforms While a DC voltage doesn’t change, AC voltage is always alternating back and forth in a fixed way. The voltage is constantly changing from some positive value, down to 0, then down further into a negative value. It then comes back up and repeats the cycle over and over again. Since the graph of voltage over time looks somewhat like a wave of water, it’s called a waveform. 10, on the following page is an example graph of an AC waveform. It shows how the voltage is constantly changing.

With three phases of AC, there is no time period in which the instantaneous power consumption of the connected machine is at zero. Any time one of the waveforms is passing through zero another one is reaching its peak. A machine that can utilize three phase power has a more even distribution of power, because one of the phases will always be at its peak when another one is at its zero crossing. One very common use of 3-phase power is specially designed electric motors. Since the power being supplied to the motor can be drawn from three different sources that provide more even flow, the cost and complexity of these motors can be reduced.

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