About Small size power module suppliers
Many open frame power supplies now offer two power ratings, one with convection or conduction cooling and one where external forced air is applied. As some applications require low acoustic noise levels, for example in healthcare where patient comfort is important, fan-less cooling is preferred. This can be achieved through operating a power supply at its convection rating, and if it is also capable of conduction cooling, a combination of both.
If the output load significantly varies with time it may be possible to utilize a power supply with a peak power rating. This allows a lower power product to be selected, saving cost and reducing its size, as the convection cooled peak power rating is often the same as the forced air continuous rating.
For example, modern hospital beds are fitted with electric motors that can adjust the angle of the bed to allow the patient to sit upright, or raise the lower portion to elevate the legs. These motors may only operate for short periods of time. The same will apply to dental chairs, thermal warmers for babies, and incubators.