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The experimental studies of point-like discharge sustained by radiation of terahertz band gyrotrons aimed to development of source of extreme ultraviolet light are described. Plasma was created in the nonuniform gas jet. The plasma density was measured from the Stark broadening of the line Ha. The radiation in the vacuum ultraviolet region was investigated using a calibrated PMT and filters, the radiation...
In this paper the analysis of application of zero-voltage-switching (ZVS) buck quasi-resonant converter (QRC) as LED driver is considered. The capability to use capacitor-less or only inductive filter in high frequency ZVS QR DC/DC converter to supply high power LEDs is shown in the paper. The criterion of resonant tank parameters selection is given. An approach to avoid multiresonant ringing effect...
The paper presents a new solar array regulator based on a buck converter with sequential switched sections. This regulator allows eliminating the problems of extra power losses due to solar section capacitance discharge and large bus capacitance that have S3R. Principle of operation is described, P-SPICE simulation and prototype testing results are compared.
This paper presents results of comparison of dynamic characteristics of single- and double-loop current regulators. It is shown that the second control loop (average mode current control) increases impedance of a current regulator, improves phase margin and reduces settling time as compared with single-loop regulator. Experimental analysis of double-loop current regulator prototype based on full-bridge...
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