本文介绍为中子管所用的一台屏蔽式150kV直流高压电源的设计特点及结构。电源的负载电流1.1mA,输出功率165W,输出高压连续可调,纹波系数10~(-3)。电源选用中频(2kc)供电的八倍压线路,将低压交流电整流倍压成高压直流电。采用中频供电可使高压变压器的尺寸大为减小,倍压级数适当增加,可输出较高的端电压,同时能减少电压降和纹波,允许输出较大的负载电流。 This article describes the design features and structure of a shielded 150kV DC high voltage power supply used for neutron tubes. Power load current 1.1mA, output power of 165W, the output high voltage continuously adjustable, ripple factor of 10 ~ (-3). Power selection of IF (2kc) power supply eight times the pressure line, the low voltage AC rectifier doubled into high voltage DC. The use of IF power supply can make the size of high-voltage transformer greatly reduced, double the number of times the appropriate increase in series, the output voltage can be higher, while reducing voltage drop and ripple, allowing greater output load current.