What is the function of an inverter?

An inverter's primary function is to convert direct current (DC) into alternating current (AC). This process is essential for various applications, especially in power systems where the generation source is DC, such as solar panels or batteries. By converting DC to AC, inverters allow for the use of electrical devices that operate on AC power, which is the standard form of electricity supplied in homes and businesses.

Inverters play a critical role in renewable energy systems, enabling energy generated from sources like solar panels to be fed into the electrical grid or used to power home appliances. This capability makes inverters vital for integrating renewable energy solutions with existing electrical infrastructures. The conversion process involves electronic components that manipulate the DC input to produce a variable frequency and voltage, matching the requirements of the AC load.

While the other options mention important concepts related to electrical systems, they do not define the function of an inverter. For instance, converting AC to DC is the function of a rectifier, regulating voltage refers to devices that stabilize output voltage levels, and rectification itself is a process that alters the form of current rather than converting between AC and DC. Thus, the correct answer highlights the specific transformative role of the inverter in electrical systems.