Antifog haze screen window control circuit

The utility model provides an antifog haze screen window control circuit, include: switch, self -maintained circuit, transformer and three voltage doubler rectifier circuit, the transformer includes first coil, second coil and tertiary winding, self -maintained circuit includes frequency -selecting return circuit and feedback loop, connect first coil of transformer and first resistor respectively through collecting electrode with the triode and base to the frequency -selecting return circuit constitutes after establishing ties first coil of transformer and first resistor, feedback loop constitutes after connecting the second coil by the projecting pole of triode, and the alternating current signal who has been amplified by the triode with electing in the frequency -selecting return circuit feeds back to the triode once more and amplifies, three voltage doubler rectifier circuit include a rectifier diode, the 2nd rectifier diode, the 3rd rectifier diode, first condenser, the second capacitor and the second capacitor. The utility model discloses designed to the novelty antifog haze screen window control circuit, effective filtration dust and haze granule reach indoor air purification's effect.