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.
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.
Building a Safe and Reliable UPS Safety should be a top priority when you build your homemade uninterruptible power supply. Follow these safety tips: Use Quality Components: Invest in high-quality batteries, inverters, and other components to ensure reliability and longevity.
Figure 1. The uninterruptible power supply (UPS) schematic. A simpler form of this circuit is a dual diode OR configuration where the cathodes of two diodes are joined and the main and backup supplies are connected to the anodes.
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