A Generator of High-Power Pulses with Nanosecond Front Edge Based on Blocks of Shock-Ionized Dynistors.
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| Title: | A Generator of High-Power Pulses with Nanosecond Front Edge Based on Blocks of Shock-Ionized Dynistors. |
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| Authors: | Korotkov, S. V.1 (AUTHOR) korotkov@mail.ioffe.ru, Zhmodikov, A. L.1 (AUTHOR), Kozlov, K. A.1 (AUTHOR), Korotkov, D. A.1 (AUTHOR) |
| Source: | Instruments & Experimental Techniques. Jun2025, Vol. 68 Issue 3, p394-399. 6p. |
| Subjects: | Pulse generators, Capacitor banks, Electromagnetic pulses, Coaxial cables, Electric breakdown |
| Abstract: | The possibility of efficiently using the principle of pulse voltage multiplication in generators of powerful nanosecond pulses based on high-voltage blocks of shock-ionized dynistors is demonstrated. The electric circuit and design of a generator containing a coaxial cable with a characteristic impedance of 75 Ω and four modules with an operating voltage of 10 kV are described. The modules are switched on in a relay-race mode; each module includes a block of dynistors and a capacitor bank with a capacitance of 8.8 nF. The results of an experimental study of the generator are given. When the cable is connected to a 75-Ω resistor and the capacitors are charged to a voltage of 10 kV, the generator provides the formation of output voltage pulses with an amplitude of ~38 kV, a front-edge duration of ~4.5 ns, and a half-height duration of ~145 ns. The jitter of the output pulses does not exceed 2 ns. When connecting the cable to a spark gap, the generator is capable of operating in a wide range of spark-gap breakdown voltages, as well as in the idling mode, in which the voltage amplitude at the end of the cable reaches a value close to 80 kV. The possibility of scaling up the generator output parameters is shown. [ABSTRACT FROM AUTHOR] |
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| Database: | Engineering Source |
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| Abstract: | The possibility of efficiently using the principle of pulse voltage multiplication in generators of powerful nanosecond pulses based on high-voltage blocks of shock-ionized dynistors is demonstrated. The electric circuit and design of a generator containing a coaxial cable with a characteristic impedance of 75 Ω and four modules with an operating voltage of 10 kV are described. The modules are switched on in a relay-race mode; each module includes a block of dynistors and a capacitor bank with a capacitance of 8.8 nF. The results of an experimental study of the generator are given. When the cable is connected to a 75-Ω resistor and the capacitors are charged to a voltage of 10 kV, the generator provides the formation of output voltage pulses with an amplitude of ~38 kV, a front-edge duration of ~4.5 ns, and a half-height duration of ~145 ns. The jitter of the output pulses does not exceed 2 ns. When connecting the cable to a spark gap, the generator is capable of operating in a wide range of spark-gap breakdown voltages, as well as in the idling mode, in which the voltage amplitude at the end of the cable reaches a value close to 80 kV. The possibility of scaling up the generator output parameters is shown. [ABSTRACT FROM AUTHOR] |
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| ISSN: | 00204412 |
| DOI: | 10.1134/S0020441225700642 |
