This is the electrical schematic diagram of what should be a negative ion generator.

Working process: rectification-oscillation-boost-rectification-output

D1-rectifier diode, R1-R5-resistance, C1-electrolytic capacitor, C2-C3-capacitor, BD3-bidirectional trigger diode, SCR- One-way thyristor, D2-high voltage rectifier, B-high voltage transformer