Design and Realization of Driving Circuit for 5-Inch Nixie Tube Based on CH452

Nixie tubes are widely used in industry, but the design of the driving circuits is one of the biggest challenges. Aiming at the characteristics of the large-size nixie tube, this paper designs the hardware circuits for 5-inch nixie tube at first, including the driving power, the bit drive circuit and the segment drive circuit. Then, the design programs to drive CH452 chip were given. During the realization process of the circuits, the perennial problems and the corresponding solving methods were given at last. This paper provides guidance for the design of driving circuit for nixie tube.