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With a New 12-volt DC Power Supply, You'll Never Scramble to Find a Power Adapter Again

For most strip lights and smaller electronics that require a separate power adapter, 12 volts is the standard. If you've misplaced or lost a power adapter, you know how irritating it can be. Luckily, replacement power adapters are inexpensive and easy to obtain on eBay and you can take a look at this broad selection of available products.

How do you determine the correct power adapter you need?

Because every device has different power needs, and each situation can call for a different power supply, you'll want to check a few things before making a purchase of 12-volt DC power supply.

  • Wattage: Determine the wattage you need to power your device. Your device should have its wattage needs printed on it someplace.
  • Usage: Consider where you'll use the power supply. Does it need to be weatherproof? Is the plug consistent with your outlets? Is the length of the cord long enough?
  • Compatability: Ensure that your device can handle the 12-volt DC current. Since 12 volts is relatively standard and on the low end of the voltage spectrum, it's less of an issue, but it's ideal to ensure accurate information.
  • Output: Ensure that the device can handle the output you need without overheating or short-circuiting. That should be standard but double-check anyway.
What does efficiency refer to with 12-volt DC adapters?

DC (direct current) power adapters take AC (alternating current) electricity from your plug and convert it to DC electricity for your device. Because AC energy is lost when converted to DC, the higher the efficiency rating of the unit, the less electricity is lost in this conversion. That means a unit with a 50% efficiency rating converts 50% of the power it draws into the DC current, which is quite a good conversion rating for AC to DC.

What options should you consider when buying a power adapter?

After you determine your exact needs on eBay, whether it be indoor/outdoor, wattage needs, etc., you'll want to ensure that you get a well-made device. A good 12-volt DC power supply device will be heatproof as the AC/DC conversion process can generate heat energy. You need a device that can handle that heat without damage. You'll also want to make sure that the 12-volt DC power supply has a safety trigger to protect from overload, overvoltage, and short-circuiting. Though most new power supplies have these built-in, you need to make sure before you buy one so that you're not replacing the unit the first time there's a thunderstorm.

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