For projector users, it is very important to choose the projector bulb according to the projector used, the environment in which the projector is used and the frequency of use. However, not every projector user knows these choices. skill. Some users t…
In US commercial and industrial buildings, more than 100 million emergency exit signs are used every day. Before the mid-1980s, most of these signs were usually made using incandescent lamps and required power from 24W to 40W. After the mid-1980s, in …
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Zarlink today announced the expansion of its voice processing product line with a highly integrated, flexible and programmable hands-free communication system solution. The ZLTM38004 voice processing platform and embedded … ——Bachelor of Architecture, Chongqing Central University, 1944—Master of Architecture and Urban Design, National Museum of Art, 1949, USA: Architecture, Urban Planning, Urban Design Work Unit: Tsinghua University Architecture and …
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Abstract dsPIc digital signal controller features Ha ISD4002 voice chip; SPl special presentation function and use dsPIC library functions, and gives a simple voice recording circuit. It has the characteri…This article refers to the address: http://
ON Semiconductor today introduced the GreenPoint(tm) reference design for CRT TV power supplies, which provides less than 1 watt (W) of standby power. This energy-efficient 160 W reference design addresses all functional b… Editor's Note: Quality lighting quality includes five main factors: proper illumination level, comfortable brightness distribution, pleasant light color and good color rendering, minimal glare interference, correct projection direction and perfect…
Foreign lighting standard reference application city suburban country light marble and gypsum 150 100 50 light yellow limestone, smooth light yellow brick, etc. 200 150 100 smooth gray brick, brick black gray brick 300 200 150 brownstone sandstone bui…
1. I forgot my smile salesman to go south and south, sometimes it is windy and rainy, sometimes cold, sometimes hot, and there are some artificial factors, inevitably with some emotions, when meeting with customers, Forgot my smile. In my heart, the i…
This is what we have achieved. It is called a sky-filled building. This foreign country, when CNN came to interview, said that more than 200 million people and more than 40 million families, under the leadership of Huang Ming, used solar energy throug…
Reading lamps that prevent myopia American experts have designed a new type of luminaire for teenagers who have been reading under the lamp for a long time, which can prevent myopia. The basic working principle of this kind of lamp is to carry out a s…