Full
Outline
To improve the pulse waveform quality of high-power microwave sources, a pulsed high-voltage modulator capable of delivering 41.2 kV, 44 A required by a klystron in a high-power microwave system was designed. The modulator with a combined architecture consisting of a Marx module and a pulse transformer achieves a high step-up ratio of approximately 100 times. Especially the dual secondary winding in the pulse transformer easily realizes the high-voltage isolation of the filament power supply. Conceptual design and functional verification are achieved through simulation and experimental research. The modulator is tested to be able to generate a high-voltage pulse of 41.2 kV with a droop of about 4.9% on a 936 Ω normally-operating klystron load at a charging voltage of 260 V. Measured pulse rise-time, fall-time and overshoot are about 800 ns, 900 ns and 3.9%, respectively.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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