| 摘要 |
A pulse power supply for generating extremely short pulse high voltages comprizing an ac charging high voltage, rectifier, pulse forming unit as a capacitive energy storage element, and an externally-controlled high speed synchronous switching unit, such as a mechanical synchronous spark switch of rotating type. The capacitive energy storage element, i.e. condenser is charged up by the ac charging high voltage source from zero voltage to its peak voltage through the rectifier without the use of current limiting resistance during its half cycle or desired polarity, i.e. negative one. Then, this charged potential of the capacitive element is kept, with the blocking action of the rectifier, until a desired instant of the next half cycle when the said switching unit is triggered from outside, e.g. by rotation of the rotor disc carrying the spark electrode elements, and the very short pulse high voltages are produced at this instant at the output of this pulse power supply. This charging scheme by an ac charging voltage altering from zero to its peak reduces greatly the power loss in the charging process of the capacitive element. The switching of the charged capacitive element to the load in the next half cycle when the rectifier is blocking avoid the short-circuit current to flow from the arc charging voltage source to the load, making the production of the pulse voltage stable and use of a large protective resistance unecessary.
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