Why we can't store ac in batteries instead of dc?
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    Why we can't store ac in batteries instead of dc?

    Why we can't store ac in batteries instead of dc?

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    arlen's Avatar
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    AC is an ever changing sine wave. the voltage and current rises, falls, and reverses direction 60 times per second. It does it because of the rotary motion of the generator.
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    Chemical reaction

    All batteries are just little chemical factories. Usually two compounds (lead & acid, nickle & cadmium, etc.) are in proximity to each other and there are two electrical connections, anode and cathode. If a wire connects the two connections, the compounds exchange electrons from one to the other. The electron flow is determined by the elements so it's a direct current. Add current to the wire (charge the battery) and the process reverses, although not perfectly.

    I believe that Thomas Edison and George Westinghouse competed on the issue of using direct vs. alternating current. AC won.

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    Keeper of the GTT Cookies dieselshadow's Avatar
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    It was actually Tesla who pushed AC. When Tesla was going belly-up, he gave his patent to Westinghouse who knew how to run a business. Even though it pissed Edison off to no end that a former employee was right, AC won over Edison's DC in the end.
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    Quote Originally Posted by dieselshadow View Post
    It was actually Tesla who pushed AC. When Tesla was going belly-up, he gave his patent to Westinghouse who knew how to run a business. Even though it pissed Edison off to no end that a former employee was right, AC won over Edison's DC in the end.
    Edison was so pissed that he invented old sparky to discredit Westinghouse and to show that AC was way more dangerous than dc.


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    Quote Originally Posted by dieselshadow View Post
    It was actually Tesla who pushed AC. When Tesla was going belly-up, he gave his patent to Westinghouse who knew how to run a business. Even though it pissed Edison off to no end that a former employee was right, AC won over Edison's DC in the end.
    A very contentious fight. Edison was very egotistical and hated to be wrong. While DC is more efficient, Tesla understood DC could not be easily transferred over hundreds of miles to reach the multitudes, of course Edison knew his patented substations would be required all over the US....money, money, money
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    Quote Originally Posted by felixm22 View Post
    Edison was so pissed that he invented old sparky to discredit Westinghouse and to show that AC was way more dangerous than dc.


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    Remember seeing videos of him demonstrating the effectiveness of electrocution by killing elephants? That wouldn't go over so well today...
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    Quote Originally Posted by dieselshadow View Post
    It was actually Tesla who pushed AC. When Tesla was going belly-up, he gave his patent to Westinghouse who knew how to run a business. Even though it pissed Edison off to no end that a former employee was right, AC won over Edison's DC in the end.
    Quote Originally Posted by felixm22 View Post
    Edison was so pissed that he invented old sparky to discredit Westinghouse and to show that AC was way more dangerous than dc.


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    Did you know that Edison actually hired people to kidnap peoples pets and bring them in to 'experiment' with?
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    Might be alittle of topic, but does anyone find it funny that everything is brought to a home in AC and now with the wave of electronics it is being converted to DC.....

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    Quote Originally Posted by PineGuy View Post
    Might be alittle of topic, but does anyone find it funny that everything is brought to a home in AC and now with the wave of electronics it is being converted to DC.....
    Not at all. If you think about the most efficient way to generate electricity is either by moving a coil of wire around in a magnetic field or to move a magnetic field around inside a coil of wire. Either way you end up with AC.

    The next step is to transmit the power. AC is much more efficient at moving power over long distances. DC requires much larger conductors. Also power generating stations need to be much closer to where the power is needed.

    The last step is to convert the AC to DC that all of our gadgets love. To do this at the end of the line is way simpler and can be done with smaller components than if the AC to DC was done at the power station at high voltages. Takes is a small step down transformer to convert the 120v down to 12v AC. Then 4 small diodes can be used in a bridge rectifier to turn the AC in to DC.
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