Efficiency and power loss at AC/DC power supplies… The demand for smaller power supplies goes hand in hand with the need to increase efficiency. While the direct relationship, depending on the power supply becomes smaller, the less space is available for the heat dissipation via convection or contact available. Calculations and tests resulted in a guide describing the maximum power dissipation in a specified size and convection cooling. All used components within the limits of their allowable temperature, and fan cooling has a great impact on these values work in these losses. In many cases, a doubling of the output when forced-air cooling is described in the data sheets. However, forced cooling is not desired, in some applications because the use of a fan inevitably reduces the lifetime, cost increases, generates noise and maintenance is required.

The main points are to keep that in mind when selecting a Web part, that the Efficiency is also affected by the ambient conditions and the conditions of use. The efficiency is often specified under the conditions where the best values arise where this is often at almost maximum load. Usually, it is unlikely that a power supply is chosen exactly with the required power. It is possible that the maximum power is needed only for a short period of total running time. The rest of the time is it burden and the efficiency is probably significantly lower than described. Another important factor is the input voltage of the device.

At the least possible input voltage, often as low line”referred to, is the efficiency of significantly lower than in the operation with the maximum possible voltage or high line”. So, a device with input voltage range is common 90VAC to refer to 230V as wide range power supply. The lower the influence of the input voltage on the efficiency has, the easier is their calculation of the likely effectiveness of and the dissipation of which must be observed when using under various operating conditions. As example of power supply has a nearly flat efficiency curve across the entire input voltage range, is the CCM250 from XP power. This 250W PSU offers an efficiency up to 95% at 240VAC, and 92% at 90VAC. As a final point, it is also to note that the efficiency of fixed input voltage is dependent on the output voltage. So, usually on devices with lower output voltages, the efficiency is lower. Often, a short data sheet contains the data for a whole family of devices with different output voltages. The efficiency specified in the heading such as “typical 88%” may refer to a device with 48VDC output voltage. If they consider the data of a 5V device in this series, the efficiency is often lower than for machines with higher voltages. The detailed study of the data is extremely important to the actual efficiency and the arising from this Dissipation of the device to capture in their application. Find out by visiting more about how XP can supply power equipment with the efficiency best for your application.