The output voltage of the MSPN series variable polarity high-voltage power supply module ranges from ± 1KV to 5KV, and polarity switching can be controlled. The polarity switching time is ≥ 400ms, the switching stability time is ≤ 100ms, and the ripple voltage is less than 0.1% of the output voltage. The working temperature range is -40 ℃ to+70 ℃