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High-resolution piezo inkjet (PIJ) printhead with 1200 nozzles per inch (npi) has been developed. A glass substrate with through holes is bonded to Si substrate with piezo actuators (PAs) placed in matrix array (32times16) via polyimide film planarized by grinding method. A thin PA composed of sputter-deposited Pb(Zr,Ti)O3 (PZT) film and Si diaphragm contributes to a shrink of PA size and then high...
Although in recent years, large DC machines have gradually been replaced with variable-speed AC machines, many large DC machines are still operating in steel mills. Flashover is still a frequent occurrence and has been ongoing issues since DC machines were first brought into use. In this investigation, flashover experiments were performed using model tests. The sustained voltage of the DC arc was...
This thesis stated many examples about transformer voltage on the direct current motor and generator that those were measured. They suggest that a flashover occurrence often has an indirect influence.
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