A Marx-based generator with adjustable FWHM using a controllable magnetic switch

Naghibi Nasab, J ; Sharif University of Technology | 2019

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  1. Type of Document: Article
  2. DOI: 10.1109/TDEI.2018.007522
  3. Publisher: Institute of Electrical and Electronics Engineers Inc , 2019
  4. Abstract:
  5. The lack of turn-off ability makes the spark gap-based Marx generator uncontrollable in terminating the output pulse. In addition, there are some limitations for rise time and voltage gain improvements in the conventional critically-damped Marx design. In this paper, an efficient over-damped design of Marx circuit is proposed, which leads to a shorter rise time as well as a larger voltage gain. A chopping magnetic switch is employed to achieve the desired values of the fall time and full width at half maximum (FWHM). Moreover, adding a DC bias circuit to the magnetic switch provides the ability to adjust the pulse FWHM parameter. Therefore, an output pulse with a shorter rise time, larger voltage gain, and controllable FWHM is achieved. The finite element method is utilized to simulate the structures, and the proposed scheme is evaluated by practical experiments
  6. Keywords:
  7. Magnetic switch ; Marx generator ; Pulsed power supplies ; Gain measurement ; Magnetic devices ; Magnetism ; Fall time ; Magnetic switches ; Marx circuits ; Marx generators ; Output pulse ; Pulsed power supply ; Spark-gaps ; Voltage gain ; Full width at half maximum
  8. Source: IEEE Transactions on Dielectrics and Electrical Insulation ; Volume 26, Issue 2 , 2019 , Pages 324-331 ; 10709878 (ISSN)
  9. URL: https://ieeexplore.ieee.org/document/8662208