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Step Up Transformers

Apr 10, 2008
Unlike step down transformers which will lower high voltage incoming current to a more energy efficient and safer low voltage like landscape lighting transformers, step up transformers act in the opposite manner. Their task is to take low voltage in their input, and convert it to a higher voltage in their output. The currents that flow through the transformer will act in an inverse way. The low current, high voltage is coming into the step up transformer and a high current, low voltage is the output. These have to be proportional to each other since multiplied together, you can find the power flowing through. Transformers do not create power, though, and they must conserve whatever is flowing through them to be efficient. This is why there is the inverse relation between the current and voltage of the input and output of the transformer.

One of the common uses of step up transformers is their use by travelers to the United States from Asian or Europe where the electrical outlets have an output of 220V. In America the typical outlet has a voltage of 120V. This means that these wayfayers will have to use a transformer to convert the amount of voltage from the 120V outlet to power their electrical devices which require 220V. If you are an American traveler going abroad, you will need a step down transformer if you want to operate American appliances.

Step up transformers are also used in applications where the device connected requires more than the typical 120V outlet. This could be anything such as outdoor lighting. In order to decide which transformer is best for your project, keep in mind that step up transformer cannot create more power. This means that you should add up the power - measured either in volt-amperes (VA) or Watts - of all the devices you intend to connect. You should also plan for some extra space in their to accommodate future project additions. You do not want to encounter a blown transformer in the future because you add a light or two. Keep in mind that over long distances, the voltage of each successive device will be lower, and you could easily encounter problems by overloading the transformer. When you are wiring your step up transformer the high voltage outgoing wires will connect to the the H1 and H2 wires of the transformer. The low voltage incoming will be tied to the X1 and X2 wires. It will be simple if you just remember that the high voltage starts with an H and it will connect to the H wires in the transformer. The Xs are for the low voltage input.

If you are unclear as to whether or not you need a transformer or what kind, then you need to ask an expert. Consulting with a professional electrical contractor will save you the costs of accidents and damage from improper installation of your project. Should you feel that you can install it yourself, but just need some guidance, there are many places to find expert tips and advice to help answer any of your step up transformer questions.
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