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To supply the cathode voltage for the two gyrotrons (140 GHz/1 MW/3 s) of the electron cyclotron resonant heating system on HL-2A, a high-voltage power supply (HVPS) based on pulse step modulator (PSM) with rated output of 80 kV/200 A has been built. Because the storing energy of the PSM HVPS is much lower than traditional HVPS, it is beneficial to load protection. In the PSM HVPS, there are eight...
Numerical analysis and measuring for the potential distribution of 800 kV MOA are introduced in the paper. Firstly, the potential distribution of 800 kV MOA with no parallel connection of capacitors, is studied with the finite element method (FEM) and ANSYS software. The voltage deviations of all the resistors and the voltage distribution ratios of each element are worked out. The partition capacitance...
The paper proposes a new Low-temperature co-fired ceramic (LTCC) bandpass filter, which can be used to provide two finite transmission zeros in the lower stopband. The coupled electromagnet of the two stepped-impedance resonators (SIRs) is improved by adding a coupling pad. A feedback capacitor between input and output is also used to realize transmission zero. An equivalent lumped circuit is derived...
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