Monday, April 19, 2010

the low voltage mercury

To make the right modulation scheme, the low voltage mercury lamp's lighting principle and V-I charactericstics are discussed, and also sell discount wedding dresses considering the baseband signal is a binary style, the 2FSK-modulation modle is selected finally.Thirdly, based on the light source V-I charactericstics and modulation style selected, the whole communication framework is built. Working principle, implementation of power driver plus size wedding dresses circuit, exception handling circuit, microcontroller circuit and power factor correction circuit are discussed.Last, considering the low transmission speed of the communication system, in order to relize speech communication, we raise a speech coding method. Implimentation of this blog new shirts 2010 method on PC is introduced.The purpose of the design is to utilize the current technology to do some elementary research on ultraviolet light speech communication. For three years hard cheap evening dresses research wedding dresses 2010 works, we accumulated some experiences in modulating of ultraviolet light and low speed speech encoding. In present, the system can transmit character information at the rate of 9.6Kbps with a low bit error rate. Real time ultraviolet speech communication is realized based on PC. In the end, conclusions of experiments and suggestion of improvement are discussed.
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