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The principle, design, and measurement of a 10-A highly stable dc current source is described. Based on a modified low-frequency equivalent model of the MOSFET, we obtain the strict current equation of the MOSFET-based voltage-controlled current source. Factors determining the current stability are investigated and reasonable selection criteria for the key components are discussed. Reasons for oscillation...
Pulse-coupled neuron networks (PCNN) can be efficiently applied to image segmentation. However, the performance of segmentation depends on the suitable PCNN parameters, which are obtained by manual experiment, and the effect of the segmentation needs to be improved for images with noise. In this paper, dynamic mechanism based PCNN(DMPCNN) is brought forward to simulate the integrate-and-fire mechanism,...
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