The trend of wireless positioning technology in the future is to combine indoor positioning with outdoor positioning to achieve seamless and accurate positioning. Existing network technology cannot fu
1. Long-distance wireless transmission technology
Long-distance wireless transmission technology: Currently, the wireless communication technologies widely used in remote areas mainly include GPRS/CDM
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With the development of the third generation mobile communication network technology, the enhancement of mobile terminal functions and the enrichment of mobile business application content, various wi
Abstract: This paper introduces an automatic charger circuit for mobile phones and electric bicycles. It eliminates the complex IC circuit and its peripheral circuits, and can also complete the functi