High Power Laser and Particle Beams, Volume. 36, Issue 11, 115024(2024)
Analysis of factors causing waveform oscillation in avalanche transistor-based Marx circuit
Figures & Tables(10)
Fig. 1. Simulation result of voltage between collector and emitter of the avalanche transistor in voltage ramp mode
Fig. 3. Output voltage waveforms of 5-stage Marx circuit under different main capacitance
Fig. 4. Output voltage waveforms of 4-stage Marx circuit under different main capacitance
Fig. 5. Output voltage waveforms of 20-stage Marx circuit under different main capacitance (charging voltage: 270 V)
Fig. 6. Output voltage waveforms of Marx circuits under different stages (main capacitance: 1.0 nF, charging voltage: 300 V)
Table 1. Package types and specific parameters of the Marx circuit in experiment
View tableView in ArticleTable 1. Package types and specific parameters of the Marx circuit in experiment
item package types specifications avalanche transistor surface mount SOT23 FMMT417 main capacitor surface mount 1808/1812 18 pF～4.7 nF charging resistor surface mount 2512 10 kΩ trigger resistor surface mount 2512 750 Ω
Table 2. Output characteristics of 5-stage Marx circuit under different main capacitance
View tableView in ArticleTable 2. Output characteristics of 5-stage Marx circuit under different main capacitance
main capacitance/pF charging voltage/V rising time/ps first peak amplitude/V amplitude/V width/ns 4700 270 338 323 963 44.34 4700 300 302 517 1090 42.86 1000 270 344 316 805 11.87 1000 300 293 518 937 11.37 100 270 392 245 359 3.13 100 300 271 436 457 2.77 56 270 392 242 242 2.51 56 300 266 426 426 2.10 33 270 394 196 196 1.03 33 300 280 368 368 1.38 18 270 627 91 91 2.15 18 300 325 260 260 0.74
Table 3. Output characteristics of 4/20-stage Marx circuit under different main capacitance
View tableView in ArticleTable 3. Output characteristics of 4/20-stage Marx circuit under different main capacitance
stage main capacitance/pF charging voltage/V rising time/ps first peak amplitude/V amplitude/V width/ns 4 4700 270 516 202 799 55.44 4 4700 300 370 340 914 53.30 4 1000 270 470 208 687 13.83 4 1000 300 375 356 793 13.43 4 100 270 547 172 326 2.84 4 100 300 387 312 390 2.98 4 56 270 585 148 238 2.60 4 56 300 426 267 267 2.46 4 33 270 694 134 157 2.24 4 33 300 376 207 207 2.07 4 18 270 662 21 72 2.39 4 18 300 313 128 128 1.58 20 4700 270 275 2039 2765 15.36 20 1000 270 239 1883 1883 6.07
Table 4. Output characteristics of Marx circuits under different stages (main capacitance: 1.0 nF, charging voltage: 300 V)
View tableView in ArticleTable 4. Output characteristics of Marx circuits under different stages (main capacitance: 1.0 nF, charging voltage: 300 V)
stage rising time/ps amplitude/kV width/ns 10 257 1.50 6.79 15 262 2.00 5.77 20 286 2.42 5.99 25 309 2.60 4.89 30 309 2.89 4.42 35 306 3.27 3.80 40 319 3.40 3.45 45 326 3.56 3.46 50 320 3.65 3.21
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Wei Zhao, Xueyi Hu, Yuqing Chen, Zhenbo Cheng, Youjie Yan. Analysis of factors causing waveform oscillation in avalanche transistor-based Marx circuit[J]. High Power Laser and Particle Beams, 2024, 36(11): 115024
Paper Information
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Received: Sep. 14, 2024
Accepted: Oct. 14, 2024
Published Online: Jan. 8, 2025
The Author Email: Zhenbo Cheng (czb20@mails.tsinghua.edu.cn)
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