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Why do we have AC current from the mains but DC current on gadgets?
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<blockquote data-quote="VLP" data-source="post: 2754118" data-attributes="member: 919092"><p>There is no rule that AC and DC must be used compulsorily for any specific purpose. What you are stating above are merely observations about common uses of ac and dc.</p><p>Historically, Direct current (DC) was the first to be developed in form of cells. Only when scientists understood more about electricity and found ways to generate (by rotating conductors in magnetic fields), they found that this type of voltage is alternating.</p><p>This led to understanding the advantages of ac especially in generation and transmission. Which made it very popular.</p><p>But in electronic appliances, like radio, PC and so many small power applications the nature of problem is different. Here you need constant source to energize electronic components. </p><p>Conclusion</p><p>Choice of AC/DC is made only by the nature of application and ease of availability of specific source. </p><p>When you use solar cells, you directly get dc. But if you want to run fan from that source, you need to convert it to ac.</p></blockquote><p></p>
[QUOTE="VLP, post: 2754118, member: 919092"] There is no rule that AC and DC must be used compulsorily for any specific purpose. What you are stating above are merely observations about common uses of ac and dc. Historically, Direct current (DC) was the first to be developed in form of cells. Only when scientists understood more about electricity and found ways to generate (by rotating conductors in magnetic fields), they found that this type of voltage is alternating. This led to understanding the advantages of ac especially in generation and transmission. Which made it very popular. But in electronic appliances, like radio, PC and so many small power applications the nature of problem is different. Here you need constant source to energize electronic components. Conclusion Choice of AC/DC is made only by the nature of application and ease of availability of specific source. When you use solar cells, you directly get dc. But if you want to run fan from that source, you need to convert it to ac. [/QUOTE]
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