1.何谓"放电"，就是与人相处时，散发（exude）你的个人魅力（charm）。
To begin to display, employ, or exude:
turn on the charm.

2.turn sb on: 往往有make sb sexually excited的意思，不是一般的兴奋，是“性奋”。
When all of a sudden- (to the waitress that brought her coffee)Sweet 'n' Lo?- I realized that I was more turned on by this gravy boat than by Barry!
——【Friends:Season 1 】episode101

3.To cause to begin the operation, activity, or flow of:
Turn on the light bulb.开电灯