As a professional switching power supply manufacturer in China, Pengchu always specialies in the research and development of new products to meet our customers' demand. Now we have been processing a new project about 250w-350w power supply without controlled fans. This design will reduce the power supply's ripple & noise, give us a relatively quiet environment. We will also design a switch for new product, this means you will not need to pull out the ac cable to make the power adapter out of power, you can do this by a switch.
Here attached is the picture for your reference:
