High-voltage small-power adjustable power supply module applied to extremely cold environment

A high-voltage small-power adjustable power supply module applied to an extremely cold environment comprises a rectification module, the input end of the rectification module is connected with a standard mains supply, and the output end of the rectification module is connected with the input end of a voltage regulation module used for realizing different voltage output; the output end of the voltage regulating module is connected with the input end of an inversion boosting module which is used for converting the voltage output by the voltage regulating module into alternating current and realizing first boosting; the output end of the inversion boost module is connected with the input end of a cascade voltage-multiplying module which is used for adjusting the voltage-multiplying output function of the inversion boost module to complete secondary boost. The voltage regulating module and the control module are connected to form a closed-loop control loop, and the control module receives a voltage setting instru