Explain the principle of operation of an 'inverter' in an uninterruptible power supply (UPS).

The principle of operation of an inverter in an Uninterruptible Power Supply (UPS) is to convert direct current (DC) voltage, typically from batteries, into alternating current (AC) voltage to power electrical equipment during a power outage or other interruption of the main AC power source. An inverter uses electronic switching devices, such as transistors or insulated-gate bipolar transistors (IGBTs), to rapidly switch the DC....