Dong-Keun Jeong

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A variety of applications using ultrasonic transducer is operating at high power in a low frequency range in industry. The resonance frequency shift and electrical impedance change is a common phenomenon in the application of high-power ultrasonic transducer. In order to achieve a stable or consistent results, it is important to track the resonance(More)
— In this paper, high efficiency full bridge LLC resonant converter for server power system is introduced. LLC resonant converter was reported in many papers recently because of its simple structure, high efficiency and high switching frequency ability. However, many SMPS designers and field engineers still encounter technical difficulties of power stage(More)
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