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A methodology, utilizing loop gain of circuitry to extract the main features for providing the useful indexes being able to come out the evaluation of light-load operation efficiency for power supply design, is proposed herein. A DC-to-DC converter scheme for adaptor application is adopted for demonstrating the relation between switching device conduction duty cycle ratio, loop gain, and efficiency...
In this paper, we present an innovative design of a solder paste inspection device which can be practically integrated into existing solder paste printing machines. Since solder paste inspection systems usually occupy a large space in vertical direction, we designed a mirror box that can re-direct the transmission of fringe pattern. In this way, a new parallel solder paste inspection device with a...
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