Power Adapter

 Science and technology in today's society more and more developed, whether production or life, almost every industry in every corner of every minute that people can not do without electricity, can not do without electronics. For dependent increase in power, we are required to have some basic knowledge of electrical safety, so as not to cause undue electricity be some accidents.        As we all know, switching power adapter is a small, portable electronic devices and electrical and electronic power supply conversion device. Switching power adapter in the past few years has made considerable development, it has been quite widely used in life. Such as games, learning language video machines, notebook computers , etc., needs to have complete switching power adapter, it is the energy treasure trove of these electronic devices. Switching power adapter has been able to get such a wide range of applications, but also thanks to its appearance of sm...

Power adapter and switching power supply is different, and their size, shape and size, the accuracy of density, performance and other parameters are different, their application is different. Power Adapter is mainly applied to small appliances, electronics, and switching power to control the entire switch switching current equipment for all electronic devices. The following small series to focus on explaining the characteristics of the power adapter and switching power supply as well as differences.   Characteristics of the power adapter and switching power supply   Switching power supply features:   The road is to use high-speed on and off by circuit control switch, the direct current into alternating current supplied to the high frequency transformer, resulting in one or more sets the required voltage. High frequency alternating current is converted to high frequency AC efficiency because the transformer in the transformer circuit is much higher than 50HZ, so switc...

Murray Slovick 29 July 2015 External power supplies (EPS) convert household electric current from a wall outlet into lower voltage direct current (DC) or alternating current (AC) to operate consumer products s​​uch as a laptop computer. External power supplies are so-called (“external”) because they come in a separate physical enclosure than the end-product, and usually provide power to the device through a separate cord and plug. The efficiency rating of a power supply is the percentage of total output DC power in relation to total input AC power. It is a measure of how much of the power is lost when it converts the AC w​​all outlet power to DC (with most of the loss during conversion taking the form of heat). As an example, consider that if a device consumes 300W of power, using a power supply unit with 85% efficiency will require about 350W of input power, and a 70% efficient supply will pull nearly 430W of power from the wall. More than 1 billion external power suppl...