A new automatic high voltage power supply without sudden changes

The paper introduces a new DC high voltage power supply, of which the rise and fall of its output are automatic, smooth and slow without sudden changes. Especially at sudden interruption of power service, its output may decrease to zero automatically and slowly. When it is used in a semiconductor detector (HpGe, GeLi, SiLi) measuring radioactive rays, it can avoid the damage to this kind of expensive detectors and its accessory, which is effected by the rapid changes or sudden fall of high voltage caused by careless operation or sudden interruption of power service. Therefore, it may maintain the inherent performances and prolong the life of these detectors