The invention discloses a digital negative
ion generator, which comprises a power conversion circuit, a main controller, a
voltage conversion circuit, a protection circuit and a negative
high voltage feedback circuit, wherein the power conversion circuit is composed of an LC half-bridge resonant circuit, a piezoelectric
ceramic transformer and a double
voltage circuit connected in sequence; the protection circuit comprises an
overcurrent protection circuit and an overheat protection circuit; the negative
high voltage feedback circuit is composed of a bleeder circuit, a
half wave rectification circuit and a
voltage amplitude limiting circuit connected in sequence; the input end of the main controller is also connected with an A / D conversion circuit; the input end of the A / D conversion circuit is also connected with a specified voltage circuit; the output end of the main controller is connected with a
driving circuit; and the LC half-bridge resonant circuit is connected with the output end of the
driving circuit. The invention also discloses a digital negative
ion generator control method. The design is novel and reasonable, work reliability is high, functions are complete, the
fault rate is low,
maintainability is high, practicability is high, and promotion and use are facilitated.