Comparing DC To AC Converter Efficiencies

When purchasing a DC to AC converter, you want to choose the most efficient component that meets your needs. Inefficiencies can lead to excessive energy loss or inadequate power supplies.

Determining Efficiencies Of DC To AC Converters

Whenever you’re trying to determine the efficiency of a converter, whether it is DC/DC or DC/AC, you need to compare the converter’s input power to its output power. This simple calculation can help determine efficiency: Output Power divided by Input Power equals Efficiency.

If a converter provides 500W of output power but requires 625W of input power, it has an efficiency of 80% (500W ÷ 625W = .80). This means the power coming in to the converter exceeds the power outputted by 20%. That 20% represents lost or wasted power. When inputs exceed outputs, the converter must release that energy somehow. It does this in the form of heat. That heat energy is then removed from the converter by cooling it off through conduction, convection or radiation.

Keep in mind that all converters have some amount of conversion loss. This means that output power will always be less than input power.

Why Efficiencies Matter

Like most electrical devices, different converters have different efficiency ratings. You can see the manufacturer’s efficiency ratings on the product data sheet. This information is important to know and understand because it will help you choose the right DC to AC converter for your application. When you know the power coming in and the power going out of the converter you’ll be able to make sure the output will be able to handle your application at full load.

The DC to AC converter efficiency also affects energy consumption. A more efficient converter will waste less energy and also use less energy trying to cool the heat waste.

Quick Calculations To Keep Handy

Figuring out a converter’s efficiency and heat loss is something you can do yourself as long as you know the input and output numbers. Use these calculations to determine Input, Output and Heat Loss/Waste:

Input Power = Output Power + Heat Loss or Waste

Output Power = Input Power – Heat Loss or Waste

Heat Loss or Waste (efficiency rating) = Output Power ÷ Input Power

Once you have those numbers in hand, you can easily compare a DC to AC converter against others to gauge efficiencies and pick the best converter for your application needs.

Find Your DC To AC Converter At ISL Products

ISL Products International carries a wide range of DC to AC converters to meet any need. Browse our catalog to learn more about our converters. If you’ve been having trouble finding the DC to AC converter that you need, contact us at (888) 904-9054. We will put our engineers to work designing you a solution.