DC to AC Inverters

Somewhat less common in the average household is a device called an inverter. Inverters convert DC voltages to AC voltages; just the reverse of a power supply. But for what purpose you might ask? There are many applications for inverters with one application being powering your AC appliances from a battery. For example, if you do any camping and want some of the comforts of home in terms of hair dryers and coffee pots, an inverter will convert the 12 VDC from your car or SUV battery to 110 VAC, 60 Hz power to drive these devices. A more practical use of an inverter is a UPS (not the package delivery company), which stands for Uninterruptible Power Supply. By connecting a UPS between your AC wall plug and your desktop computer, your computer keeps working even when the AC power to your home fails. It does this by quickly switching from wall AC power to UPS generated AC power (from the DC battery), usually within less than one cycle of 60 Hz AC (or less than 16 milliseconds).

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