Toroidal Chokes – An Ideal Choice For SMPS Applications – Miracle Electronics

1. With switched mode power supplies becoming so popular and widespread, the number of manufacturers of such SMPS products and components have increased. With designs and capabilities ranging across a wide assortment, the types and specifications of each component used to build the SMPS are also varied. It is thus crucial to make the right selection. While there are a multitude of components to be chosen, there’s one very special piece that needs to be carefully chosen – the choke – in order to fully utilize the advantages of switching regulators. Choosing the right choke type Choosing the right choke type isn’t rocket science! It’s easy if you understand the demand for higher power efficiencies and the proliferation of distributed power architecture. When looking from the perspective of electromagnetic compatibility, toroidal chokes are the ideal choice. The magnetic field lines pass mainly through

2. the core; the stray field and associated coupling in neighbouring conductor tracks or components remaining very small. Such efficient toroidal chokes serve to buffer electrical energy, while smoothing the output current. What are toroidal chokes? Toroidal chokes are ring-shaped chokes that are manufactured with iron-based amorphous alloy. They offer a unique combination of ultra-high saturation induction, high energy storage capacities, and low core losses for high frequency magnetic components, which are significantly smaller than other conventional components. How are toroidal chokes used effectively? Toroidal chokes provide an efficient means of filtering supply lines having in-phase signals of equal amplitude, thus allowing the equipment to meet stringent electrical radiation specifications. Wide frequency ranges can be easily filtered by using high and low inductance toroidal chokes in series. Differential mode signals can be substantial attenuated, when used together with input and output capacitors. In order to enable high energy storage and minimize the resulting core losses, the toroidal core volume is divided into multiple electrically isolated regions, which is why the iron powder used in the chokes is uniformly distributed with microscopic air gaps to prevent eddy current losses. Thus, the reduced permeability is balanced by maximum energy storage and lower losses. This makes toroidal chokes ideal for application with high DC pre-magnetization. Where to get your toroidal chokes? When looking for an efficient choke, you need to reach out to such toroidal chokes manufacturers in India who can offer rugged SMPS chokes, designed to filter out noise currents from various electrical and electronic power control circuits. One such manufacturer is Miracle Electronics, who after tremendous research and development, possesses the capability of producing toroidal chokes as well as toroidal transformers that utilize newly developed materials, designs, and processes; setting new standards for performance in the industry of electronics! Every product manufactured here is ISO certified, and fully RoHS and REACH compliant, also available with CE and UL marks on request. You can thus ensure to get only high quality and superior performing products at Miracle Electronics.