OFweek energy-conserving network News: Recently, were made by seven departments such as development and reform committee, construction and traffic committee in urban and rural areas of Shanghai of Shanghai <<Shanghai encourages Electric automobile Fill and change electric facilities and develop the temporary means >>hereafter referred to as the method Announcement. ... Read more
OFweek optical display network news ... Read more
OFweek mere communication network News on May 8, 2013, with the constant promotion of the social information-based process, increase to the bandwidth demand severely by new developing application such as video business such as video on demand, P2P, IPTV and 3G, LTE, cloud calculating and Internet of things. It is predicted during the following 5 years the intersection of trunk line and GAGR of flowrate exceed 80%, trunk line network bandwidth present 10- 15 times in demand after the 5 year. The present 10G and 40G WDM optical transmission system is unable to meet the transmission capacity demand for growing at top speed, 100G Arise at the historic moment. ... Read more
OFweek intellectual electric wire netting news: Early morning, when you leave home to go to work, because leave hastily, the family electric light might not be shut in, needn’t be flurried, so long as pick up the mobile phone and stir the key set gently, can at one time close the electric lights and electric apparatuses of home. While coming home from work, the garage door in the house opens slowly, the light is opened, the corridor wall fitting in home is lighted, when go to the sitting room, the pendant lamp illuminates the sitting room. This is typical application of a intellectual home furnishing lighting system. Unless by the system, can enjoy on all sorts of advantage that intelligence light you,can also electricity consumption scientifically and rationally, really kill two birds with one stone. ... Read more
The water pollution is initiating the increasingly high concern, the administration fund that the government invests increases fast too. ” 12 five ” The environmental plan of the water pollution is put into 1,178,600 million yuan, is directed primarily to the domestic sewage, industrial waste water, basin to control etc.. Among them, China urban the intersection of sewage and the intersection of treatment facilities and construction plan invest 430 billion, Chinese industrial waste water control, invest 129,200 million at least. ... Read more
American fiber optic net situation ... Read more
OFweek intellectual electric wire netting News: If you wonder how to turn your family into a intellectual home furnishing, please read the following preferably secrets. Warm suggestion: Once your family realizes the intellectual home furnishing, your friend may begin to do together with you. ... Read more
The frequency converter will produce the harmonic wave in the course of running, will present the interference problem in the system or instrument closer to the frequency converter, the interference trouble that the interference causes is as follows, the instrument produces the greater error in emasurement, some instruments can’t even work normally, even make the system present faulty action,etc..
The frequency converter produces the harmonic wave of bigger power, it interferes with the route and is similar to the general electromagnetic disturbance route, namely produced the disturbance voltage or electric current through hook-up, electromagnetic radiation, Inductive Coupling. Uency converter, the fluctuations of Living strong electromagnetic field and electric power supply influence the most master interference source of instrument and apparatus of frequency converter, through observing.
But so instrument appear interference or trouble, impute to then interference that frequency converter produce, how to solve the doubt and difficult problem, we can go on according to the following step: Having suspended the frequency converter while the interference appears, if instrument and system return to normal at once, can affirm the interference is caused by frequency converter, should take the corresponding measure.
The expert thinks that is interfering with the trouble scene, can take the following measure to overcome the interference that the frequency converter is being produced to the instrument:
1,Increase the smoothing circuit in the instrument loop, block the undesired signal or the bypass is lost
2,When the instrument has numerical filtering functions, can presume certain time constant.
3,Signal cable adopt shielded cable, the single point earthing of shielding layer.
4,Connect 4 in parallel at the outcoming signal terminal of the transducer. Electric capacity or outputting the electric capacity of joining-up in parallel of over the ground of signal line of 7 microfarads / 100V.
5,The signal line must be earthed while shouldering the end.
6. Adopt the isolater of signals. ... Read more
OFweek semi-conductive lighting network news AOC has introduced a new display unit, aims at using one Display unit , the content that can offer 2 display screens. AOCQ2963PM display unit of 29 inches, has allocated 21: 9 IPS screens, has 2560x1080WHFD definition of the theater grade, and can reveal the content obtained from 2 different input sources on the screen. Picture in picture Picture-in-Picture And divide and reject Picture-by-Picture The mode, can receive and come from HDMI, DisplayPort, DVI port, even MHL from intellectual mobile phone or dull and stereotyped computer connects. ... Read more
On March 28, the country network north Utilities Electric Co.,Ltd. of Ji releases 2012 community responsibility to practise the report to the society. This it is this that practise report, continue, succeed the intersection of issuing service and the intersection of Hebei and socio-economic development after the white paper too by first community responsibility that company release, deliver to the public and appraise the shoe responsibility supervised and answer the questions in a test paper and seriously promise publicly again. ... Read more
