Methods and compositions generating and using an interleukin-1 receptor antagonist -rich solution. Some switch-mode power converters or voltage regulators use output signal ripple to effect voltage regulation. The method also includes associating the dimension information with features of the 3D model and storing the 3D model and associated dimension information in the CAD system. When the sensed temperature value is higher than the preset temperature value, the microprocessor controls the indication device not to operate and controls the heating unit stop heating the electronic components.