After more than three months of suspension, Liard (300296) disclosed the restructuring plan on January 5, and planned to invest about 900 million yuan to acquire the entire equity of Guangzhou Lifeng Culture and Beijing Jinlixiang. It is reported that…

The Guangdong Provincial Bureau of Quality and Technical Supervision recently announced the results of the special supervision and inspection of the quality of self-ballasted fluorescent lamps for general lighting in Guangdong Province in 2014. The ge…

The State Council Office held a press conference on the development of the industrial communications industry in the first half of 2013. Zhu Jun, deputy director of the Communication Development Department of the Ministry of Industry and Information Technology, said that i…

On the evening of September 4, Tianlong Optoelectronics released a risk warning that the company's stock may be suspended. The company announced that the company's 2012 and 2013 losses for two consecutive years, according to the "Shenzhen…

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With the pollution of the environment and the energy shortage, electric bicycles have become more and more popular among people with the advantages of no waste gas pollution, no noi…

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Telegraph transmitter
Launch emission
Emission (or signal) bandwidth of an emission (or a signal)
Transmitter
Transmitter sideband spectrum
Rated output power of transmitter
Transmitter combiner
Cooling system of transmitter …

Since the color and luminous efficiency of LEDs are related to the materials and processes for making LEDs, red, green and blue are widely used at present. Due to the low operating voltage of the LED (only 1.5-3V), it can actively emit light and have a certain bright…

On December 21, 2012, an unusual day, several years ago, it had been given the title "End of the World". This controversial "Mayan prophecy" (the ancient Maya prophecy, after the night of December 21, 2012, the dawn of December 22 will never arrive.…

At present, noise has become a major environmental pollution, and the acoustic environment of buildings has received more and more attention and attention. The selection of appropriate materials for sound absorption and sound insul…

India pushes national energy conservation. Since March, New Delhi’s electricity users have been subsidized first, and two LED bulbs have been purchased at a price of about RMB 1 per trip, which is estimated to save 1% of total electricity consu…