A range of electronic components, including semiconductors, are used within electronic products such as industrial and consumer  equipment. Semiconductor devices such as ICs, FETs, transistors, diodes,  and so on, operate based on a stable DC power supply. In other words, it is  vital to convert the AC current supplied to plants and households into a  stabilized DC current. COSEL’s DC-stabilized power units help to  realize this. 
In particular, COSEL's "switching power supply," which utilizes  the high-speed switching effect of semiconductors, is one of our major  products. Switching power supplies are compact, lightweight and highly  efficient, which means that they are now used in almost all electronic  devices, including in information communications, medical and factory  automation devices. We have been engaged, furthermore, since 2005, in  the production of a noise filter that protects electronic equipment from  a range of noise, and have now released a product using that  technology. 
Nowadays almost all the products that are available in society and  used in our daily lives utilize electronic technology, and as such, the  DC-stabilized power unit holds the key to the future. At COSEL, we are  engaged in endless discussions with new technology, in order to build  high levels of reliability into future products.