A UPS (Uninterruptible Power Supply) works by ensuring a continuous power supply to connected devices even when the main power source fails. Here's how it works:
UPS Power Operation
The UPS uses a process to maintain power:
- AC to DC Conversion: The UPS first converts the incoming AC (Alternating Current) power from the main power source into DC (Direct Current) power.
- Battery Charging and Storage: The DC power is then used to charge and maintain a battery. This battery acts as a reserve power source.
- DC to AC Conversion (On Outage): When a power outage occurs, the UPS inverts the stored DC power from the battery back into AC power. This AC power is then supplied to the connected devices.
- Seamless Power Transition: This conversion happens almost instantaneously, ensuring that your connected devices continue to operate without interruption. This provides enough time to save work and properly shut down equipment.
This process, as explained by a reference from 19-May-2022, allows devices to remain powered during outages because the UPS "works by converting AC power to DC power and storing it in a battery. Then, it converts the DC power back to AC power, running it to your building's AC outlets. Your connected devices will continue to operate on the stored battery power, giving you time to save your work and shut down the computer."
