Can a transformer convert from AC to DC? The short answer is: No.
Why Not?
The task itself is simply too complex for such a simple machine. The transformer itself is designed for one basic task, and that is to convert high and low voltages. A transformer is built to transfer the energy from one circuit into another circuit by way of magnetic coupling. There are no moving parts in a transformer, it uses windings, either one tapped winding or multiple coupled windings, and, usually, a magnetic core that enables the transformer to concentrate the magnetic flux. An alternating current creates a magnetic flux in the core on its way through the first winding, inducing the voltage in the others. It can convert high and low voltages, it cannot convert AC to DC.
But they can be used as a component in a larger system that does convert AC into DC.
How Is A Transformer Used In A System That Does Convert AC To DC?
In a power supply system that converts AC into DC, the transformers will function just as they would in any other system, transmitting and converting energy between high and low. The magic ingredient in a system that converts AC to DC is the rectifier. The rectifier uses a series of diodes to even AC power out into DC power, or a sort of "pulsating DC." It's not a perfect solution, but it creates a steady enough flow of power for most devices. Almost anything that requires more than about five volts is going to have some sort of built-in power regulator built in so that power surges aren't as much of a threat to the device.
If you'd like to learn more about transformer services or need skilled electrical contractors, contact the team at Power Plus Engineering today.