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National Repository of Grey Literature 1 records found  Search took 0.00 seconds. 
High-power LED driver for under-water communication
 Hroch, Vojtěch ; Barcík, Peter (referee) ; Kubíček, Michal (advisor)
This bachelor thesis is focused on design of a transmitter for optical links in water using power LED. This thesis analyzes commercial availability of LEDs and their properties, power transistors needed to switch the diods and choice suitable transistor drivers. Furthermore, the thesis is focuse on modulations, which are using in optical communication. Work mentions some aspects of this issue for the underwater signal transmission in terms of the required wavelength depending on the attenuation of optical signals in water. Next solved problematic is designs of circuits including the the design of printed circuit boards. Last part in this work is evaluation of achieved results in comparison with expectations and the possibility of futher improvements.
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