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How Surge Protectors Work
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One piece of equipment you need at home is a surge protector. They safeguard your high-tech electronic devices from power surges. But how do you know which ones are best?
What's the purpose of a gas discharge arrestor?
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Some surge protectors use gas to protect your appliances. Learn about the purpose of a gas discharge arrestor from this article.
How Power Felt Works
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Power felt could charge your iPod while you run or fuel a flashlight when the power is out. See how power felt works and how power felt can change your world.
What's a voice coil on a speaker?
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A voice coil is an electromagnet. Learn how a voice coil works on a speaker in this article.
How Hand-powered Generators Work
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Hand-powered generators are great travel gadgets. Learn more about hand-powered generators at HowStuffWorks.
How Amplifiers Work
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It may seem like an audio add-on, but without an amplifier, you'd never be able to hear the music on your CDs (your neighbors might be happier, but would you?). Find out how amps pump it up to 11.
How Wireless Speakers Work
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Wireless speakers can eliminate some of those pesky audio cables. While they do have advantages, wireless speakers also come with some strings attached.
Scientists Have Invented a Battery-free Cell Phone
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HowStuffWorks explores the technology behind making cell phone work without a battery. It's harder than you might trip.
How does a CB radio antenna work?
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How does a CB radio antenna work? Why does it have to be tuned? How do you tune it properly?
How Mug Warmers Work
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Mug warmers are great kitchen gadgets to have in the house. Learn more about mug warmers at HowStuffWorks.