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Which of the following is used with critical load like hospital intensive care unit where a temporary power failure can cause lot of inconvenience?

Which of the following is used with critical load like hospital intensive care unit where a temporary power failure can cause lot of inconvenience? Correct Answer UPS

UPS is used with a critical load like a hospital intensive care unit where a temporary power failure can cause a lot of inconveniences.

An uninterruptible power supply (UPS) is a device that allows a computer to keep running for at least a short time when the primary power source is lost. It

also provides protection from power surges.

The simplified block diagram of UPS is shown in the figure.

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In UPS, the AC from the mains power is transformed into DC. This DC is continuously charging the battery. The DC output from the battery is fed to an inverter that converts it into AC output and supplies to the equipment.

Rectifier: It is an electrical device that converts alternating current (AC), which periodically reverses direction, to direct current (DC), which flows in only one direction. The process is known as rectification.

Battery: It is a device consisting of one or more electrochemical cells with external connections provided, to power electrical devices.

Inverter: It is an electronic device that converts DC to AC. It is used in Uninterruptible Power Supply (UPS) to convert DC current in storage batteries to AC power supply in the absence of AC main supply.

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