Through to thorough analysis of the electrical power wastephenomenon of switching power supply system

proposed design idea based on "the soft off" work way of switching power supply system to save electicity power

designed the corresponding safetycontrol centered on the characteristic of this idea

and has carried on the confirmation by each kind of barrierphenomenon to the system security

finally had pointed out this electricity saving work way of switching power supply system will correspond in the domain application prospect in the future.