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A study was performed to evaluate the effect of thermal hydrolysis pretreatment (THP) temperature on subsequent digestion performance and operation, as well as downstream parameters such as dewatering and cake quality. A blend of primary and secondary solids from the Blue Plains treatment plant in Washington, DC was dewatered to about 16% total solids (TS), and thermally hydrolyzed at five different...
This paper proposes a three-phase BLDC motor brake driver IC. The driver contains five major units that are hall-signal-process-unit, logic-control-unit, speed-control-unit, brake-control-unit and power-driver-unit. First, motor speed is used PWM that can be controlled by frequency instead of traditional voltage control method. Moreover, a new brake structure using frequency-to-voltage converter (FVC)...
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