This page will concerns the ripple and noise of AC-DC power adapters or switching power supplies. It describes basic information on ripple and noise. What is ripple? Ripple and noise voltage is the alternating current voltage superimposed on the output voltage. Ripple is a phenomenon caused by voltage fluctuations in the DC stabilized power supply because the DC stabilized power supply is generally formed by the AC power supply through rectification, voltage regulation, filtering and other links. Due to incomplete filtering, residual AC components will inevitably be more or less in the DC stabilized amount with some AC components. This superimposed on the DC stabilized amount of the AC component is called ripple. The ripple component is more complex. Its form is generally higher than the frequency of the sine wave-like harmonics. Another is a very narrow width of the pulse wave. Generally, we see the ripple in the form of the following figure, a bit like a sawtooth wave. From this, we know that the switching power supply's output is not pure DC voltage. There are some AC components which are caused by ripple and noise. Ripple is the output DC voltage fluctuation and is related to the switching power supply's switching action. For each on/off process, the

Industrial power supplies are devices that are used to provide power to industrial equipment. Power supplies can be used to provide power to different electrical loads. So industrial power supplies are critical components in various industries, ensuring that machinery and equipment run smoothly. Without them, factories, manufacturing plants, and other industrial settings could experience downtime, inefficiencies, or even damage to valuable equipment.    So let's take a look what an industrial power supply is. The industrial power supply is a system that provides reliable and consistent electricity to industrial equipment. Its main job is to convert and regulate the incoming power to ensure it meets the specific needs of machinery, no matter how big or small. In simple terms, an industrial power supply takes the electricity from your wall outlet (which is AC power) and converts it into the kind of power that industrial machines need (which is often DC power). Think of it like a translator, making sure the electricity “speaks” the right language for your equipment. But they do more than just translate. Industrial power supplies also act as bodyguards, protecting expensive equipment from power surges, spikes, and other electrical hiccups that can cause damage or downtime.