The onboard battery continues to provide power to the PCBs within the computer, such as the CPU, so no loss of data occurs. If the laptop or tablet is connected to the power supply and the user is working on the computer, a sudden loss of utility power will prevent the power supply from any further recharging of the battery during the outage period, but from the perspective of the user, they do not experience any downtime or outage. The power supply or charger unit that comes with the computer serves to recharge the battery as needed when the charge level drops off from use. Laptop and tablet computers are powered from an onboard battery technology such as Lithium-Ion that supplies the DC power to the computer's electronics. Perhaps the simplest example of a UPS with which we are familiar is the battery backup used in personal computers. This article will provide a review of the common types of UPS systems that are used and will discuss their configurations and operation. Or in other cases, the UPS may be configured to provide power for a much longer period, in effect, providing continual power that results in no interruption in performance by the equipment connected to the UPS. Depending on the demands of the application, the UPS may function to power the system long enough to allow for an orderly shutdown to be achieved, thus avoiding the issues of a system crash from sudden power loss. ![]() ![]() A UPS is a common element included in the design of computers, server farms, and data centers that house digital data. An Uninterruptible Power Supply, abbreviated as UPS, is a device whose purpose is to provide power to a system when the primary power source fails, or when the voltage level of the power source drops below acceptable performance levels.
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