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Although plastic packaging has successfully replaced ceramic and metal packages for many high reliability electronic packaging applications (e.g. military and aerospace), hermetically sealed ceramic packages are still the dominant technology for large power devices, such as the thyristors and diodes used in high voltage DC (HVDC) power transmission. With increasing energy requirements of growing economies,...
Space charge behavior of the composite of polyethylene and nano-MgO was investigated with pulsed electroacoustic method (PEA). It is found that space charge was well suppressed as the content of nano-MgO is less than 2.0% wt. Also it could be seen that bi-polar injection occurs in the composite as electrical stress increases to 60 kV/mm. Comparing to the amount of space charge in the short-circuited...
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