History of power adapters
Power adapter , can not be separated from our lives, such as mobile phone charger, mobile power, LED lighting, etc., we discuss the history, background, research scope, current status, future development direction and current controversy focus of the power adapter, the purpose of the research Meaning, importance. At the end of the 19th century, Thomas Edison successfully used a direct current transmission to light up the light bulb, but because of the huge energy loss, the efficiency of direct current transmission is very low. In 1957, JenSen invented the self-excited push-pull double transformer. In 1964, American scientists proposed the elimination of the series power adapter of the power frequency transformer, which made the power supply a fundamental way to reduce the volume and weight. . Later, Nikolates invented the AC transmission, which replaced the DC transmission. In 1969, due to the improvement of the withstand voltage of high-power silicon transistors and the shortening o...