Which device is typically used to convert AC to DC?

The device that is typically used to convert AC (alternating current) to DC (direct current) is a rectifier. A rectifier functions by allowing current to flow only in one direction, effectively transforming the bidirectional flow of AC into a unidirectional flow of DC. This is achieved through the use of diodes, which are semiconductor devices that permit current to pass through them in one direction while blocking it in the opposite direction.

In the context of HVACR systems, rectifiers are essential when DC power is needed, such as in various control circuits, electronic components, and for charging batteries.

In contrast, a transformer is used to change the voltage level of AC power without converting it to DC. An inverter, on the other hand, converts DC back to AC, making it suitable for applications requiring AC supply. An inductor serves to store energy in a magnetic field when electrical current flows through it, but it does not perform the conversion between AC and DC. This distinction clarifies the specific role of the rectifier as the device responsible for the AC to DC conversion process.