Status of domestic air purifiers is discussed

combined with theory and practice

propose flaws. Design air cleaning system which uses CY8C27443 as control core assisted by several other sensors. It primarily adopts high voltage dust precipitator to remove dusts; in addition to that

it also works with other modules. A self-designed high-voltage supply is introduced

voltage can be accurately controlled through changing PWM duty ratio

thus avoiding electrical breakdown. It has been proven that the purifier can apply to different circumstances

by sensor self-adaptively adjust working voltage to achieve the highest efficiency. Practical application prove that its operation effect is good

and has advantages of high safety factor

environment protecting and easy to operate.