Assembling the Uninterruptible Power Supply

This article discusses a simple uninterruptible power supply that can come in handy in various situations. The design contains a rechargeable Li-Ion battery, battery protection and charging circuitry, and a 12V step-up module. It features two 12V outputs and a standard full-size USB port for charging all sorts of mobile devices.

Design a home uninterruptible power supply (UPS) by using a car battery as a backup power source. This is connected to a buck-boost converter that generates a stable 12 V/5 A supply to power the Wi-Fi router, as well as a 6.5 V/1.5 A buck converter to power a cordless telephone. The circuit in Figure 1 was designed out of necessity.

As the world becomes more advanced, our dependence on electricity becomes more acute. Power outages can reduce the most sophisticated homes to quite primitive ones and this article describes the design of an uninterruptible power supply for the home that keeps alive the home's most essential service: Wi-Fi.

The human desire to have a steady power supply for domestic and industrial purposes gave rise to an uninterrupted Power supply (UPS). Globally, the need and demand for computers, electronics, and other electrical devices are on the rise. These types of equipment required quality, high stability, and uninterrupted power supply.

This guide will yield one scalable uninterrupted power supply system. You may extend it with power generation, or solar/wind/etc. as you see fit. Most uninterrupted power supplies sold for computers 'switch' power, running a small inverter when power is interrupted, then switching back to 'normal' power when it's back on.

For larger power units, Dynamic uninterruptible power supply (DUPS) are sometimes used, a synchronous motor/alternator is connected on the mains via a choke. Energy is stored in a flywheel, when the mains supply fails; an eddy-current regulation maintains the power on the load as long as the flywheels energy is not exhausted.