The Role of Electrical Transformers in the 21st Century

by | Mar 13, 2019 | Transformers and Inductors

Ever since Ottó Bláthy invented the first electrical transformers in the late 1800s, these electrical devices have been an important part of many things running on electric power. You may see tiny transformers in an electrical circuit or very large ones in electric power substations. However, just because the world is computerized, it does not mean these devices are not still important. Here are some of the places you may see transformers in action today.

Microwave Power

Any place you need a change of voltage, electrical transformers are there. For example, when you heat up leftovers in the microwave, power enters at about 120 volts, but the microwave uses voltage as high as 2000 volts or more. This is possible because of the high-voltage transformer inside.

Home Power

The electricity in your home is around 110-120 volts. However, it may come from the power company at 7200 volts. The transformer on your electrical pole takes this high voltage and lowers it so you can use it at home.

Power Cords

When you plug in your smartphone, laptop, or tablet computer, you expect the battery to get charged. This power can also run your device, but it does not use 120 volts. Instead, it may use 24 volts or less. A small transformer in the plug converts this power.

Substations

Electric power does not reach your home directly from the power company. It passes through substations and with the help of electrical transformers they may take very high voltage and lower it so it can pass efficiently through a local power grid. They also make sure power is regulated and can act as a power relay station.

Manufacturing

Many manufacturing facilities require three phase AC power. It takes special three phase electrical transformers to step down this power so it can be used by heavy equipment, large motors, and drive systems.

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