The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
For over a century, since the invention of the telephone, the telephone network has relied on DC Power and has used DC battery reserve to provide “continuous dial tone”, even during commercial power outages. The debate between proponents of George Westinghouse's AC and Thomas Edison's DC commercial power distribution schemes has raged just about as long as the telephone has existed. The debate over...
In the field of wireless power transfer technologies, the improvement of transmission efficiency is one of the critical issues. It is important to understand how much power loss is imposed in which areas of a wireless power transfer system in the development phase. Since the transmission characteristics change according to ambient conditions, a measuring instrument capable of observing electric power...
The development of wireless power charging radiator for mobile device and its efficiency characterization are presented. The radiator which is designed using a microstrip patch in spiral shape is intended to work at operating frequency around 10MHz. Some investigations over the gap between 2 radiators are carried out to analyse the effect of varied gap separations to the reflection and transmission...
This paper proposes a synchronous rectification (SR) control scheme for LLC resonant converter by digital controller. In the proposed SR control scheme, conduction detector circuit senses the drain-source voltage of secondary SR switches to detect the state of paralleled body diode. Digital controller tunes the turn-on and turn-off time of SR switches depending on conduction detector circuit output...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.