Low no -load loss's transformer system

The utility model discloses a low no -load loss transformer system, including main transformer, low no -load loss's auxiliary electrical power source, a single -chip microcomputer, electronic switch and load detecting element, break off main transformer when unloaded and only use the auxiliary electrical power source of low -power consumption, utilize the singlechip when main transformer T1 is unloaded output pulse scanning signal electronic switch is instantaneous switches on with control, whether load detecting element real -time detection load return circuit switches on, in case detecting, the load switch closure can control the electronic switch normal close when carry in the main transformer T1 area, main transformer normal use accords with fully loaded high efficiency, thereby realize making when the empty load loss greatly reduced in order to satisfy american efficiency DOE standard index. 本实用新型公开了种低空载损耗变压器系统，包括主变压器、低空载损耗的辅助电源、单片机、电子开关与负载检测单元，空载时断开主变压器而仅使用低功耗的辅助电源，利用单片机在主变压器T1空载时输出脉冲扫描信号以控制电子开关瞬时导通，负载检