家电节能有良方录音机中的电源变压器一般是装在开关前面，所以每次使用完毕，都应随即把电源插头从电源上拔出，否则，即使机上开关断开但电源变压器仍然接通，线路上的空载电流不但白白浪费电能，千时还会惹出祸端。电视机不要把亮度开得太大，这样不仅节能，还能延长其... Power transformer energy-saving Recorder power transformers are generally installed in front of the switch, so each time you are finished, should immediately unplug the power plug from the power, or even if the switch on the machine but the power transformer is still connected, the line On the no-load current not only wasted power, thousands will be able to stir up trouble. Do not set the TV too high brightness, so that not only energy, but also to extend its ...