title: A compact high-voltage pulse generator based on pulse transformer with closed magnetic core.
abstract: A compact high-voltage nanosecond pulse generator, based on a pulse transformer with a closed magnetic core, is presented in this paper. The pulse generator consists of a miniaturized pulse transformer, a curled parallel strip pulse forming line (PFL), a spark gap, and a matched load. The innovative design is characterized by the compact structure of the transformer and the curled strip PFL. A new structure of transformer windings was designed to keep good insulation and decrease distributed capacitance between turns of windings. A three-copper-strip structure was adopted to avoid asymmetric coupling of the curled strip PFL. When the 31 microF primary capacitor is charged to 2 kV, the pulse transformer can charge the PFL to 165 kV, and the 3.5 ohm matched load can deliver a high-voltage pulse with a duration of 9 ns, amplitude of 84 kV, and rise time of 5.1 ns. When the load is changed to 50 ohms, the output peak voltage of the generator can be 165 kV, the full width at half maximum is 68 ns, and the rise time is 6.5 ns.
authors.affiliation: College of Optoelectronic Science and Engineering, National University of Defense Technology, Changsha 410073, China.
authors.forename: Yu
authors.initials: Y
authors.lastname: Zhang
authors.forename: Jinliang
authors.initials: J
authors.lastname: Liu
authors.forename: Xinbing
authors.initials: X
authors.lastname: Cheng
authors.forename: Guoqiang
authors.initials: G
authors.lastname: Bai
authors.forename: Hongbo
authors.initials: H
authors.lastname: Zhang
authors.forename: Jiahuai
authors.initials: J
authors.lastname: Feng
authors.forename: Bo
authors.initials: B
authors.lastname: Liang
mesh_terms: D000465:Algorithms; D003198:Computer Simulation; D003300:Copper; D025802:Electric Capacitance; D011211:Electric Power Supplies; D004867:Equipment Design; D008280:Magnetics / Q000295:instrumentation*; D013997:Time Factors
chemical_list: D003300:Copper