Electronics

  2010 JUL 28 - (VerticalNews.com) -- "Innovative design of a compact 100-pulses-per-second high-voltage trigger pulse generator, based on an incorporated structure with a curled parallel-plate capacitor and a spiral-strip pulse transformer, is presented. The repetitive trigger pulse generator was developed to trigger a trigatron, which has been used to pulse a 500-kV intense electron beam accelerator (IEBA)," scientists in Changsha, People's Republic of China report ...read more

  2010 JUN 30 - (VerticalNews.com) -- According to a study from South Korea, "In this paper, we propose an analytic model for inverted-staggered organic thin-film transistors, and we use the proposed model to investigate the dependence of contact effect on the voltage bias, the film thickness of the organic semiconductor, and the channel length."

  "In our model, the variable-range-hopping transport is adopted for the conduction in the horizontal direction to the semiconductor-insulator interface, and the space-charge-limited conduction is adopted for the conduction in the vertical direction by considering the molecular orientations. Qualitative agreement is obtained between simulation and measurement in the steady-state characteristics," wrote C.W. Sohn and colleagues, Pohang University of Science & Technology ...read more

  2010 JUN 30 - (VerticalNews.com) -- "The axial dependence of the anode current distribution in a 2.45-GHz oven magnetron was investigated. We previously demonstrated that installing a cathode shield is an effective way to reduce magnetron noise," scientists in Kyoto, Japan report.

  "The objective of the present study is to determine why installing a cathode shield reduces the noise. We measured the anode current of a test magnetron with an axially segmented anode block. When no magnetic field was applied, the test magnetron behaved like a cylindrical vacuum diode, and the axial electron distribution corresponded to the axial distribution of the cathode temperature," wrote T. Mitani and colleagues, Kyoto University ...read more