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《电声技术》2011,(11):89-89
主要性能特征 (1)精巧立体声功放;(2)内置扩展电源;(3)机载输入增益控制;(4)VCA(欧式)控制;(5)削波(CLIP)、开机(POWERON)、待机(STBY)及信号出现(SP)指示灯;(6)直流及短路保护;(7)工作模式:立体声、并联、桥接;(8)低频响应达100Hz,则关闭高通滤波器;(9)无声对流散热;(10)自动感应开关,节能设计,适合隐藏式安装;(11)德国工业标准(DIN)35mm轨道式安装,墙安装挂件;(12)平衡立体声线路输入插孔(欧式);(13)非平衡立体声线路输入插孔(莲花);(14)欧式输出控制;(15)质量:3.5kg(AMPACK25),4.5kg(AMPACK80)。 相似文献
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Thin films of five vanadium compounds/composite: (1) VO2(3-fl) (3-fl = 3-Hydroxyflavone), (2) VO(pbd): (pbd = 1-Phenyl-l, 3-butadione), (3) VO(dbm)2 (dbm = Dibenzoylmethane), (4) VPc (Vanadyl Phthalocyanine) and (5) V2O5-PEPC (V2O5- poly-N-epoxypropylcarbazole composite), were deposited by the dropcasting method from the solution in benzene. The transmittance-irradiance relationships were investigated and the transmission in the visible spectrum and optical images were obtained as well. It was found that the transmittance of the VO2(3-fl), VO(pbd)2, VO(dbm)2 and VPc, was practically independent of the irradiance; whereas the transmittance of V2O5-PEPC decreased by 4% for thin and 9% for thick films with an increase of the irradiance. 相似文献
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Iain Pattison 自身录音师,曾参与制作《Slither(撕裂人)》、《StargateSG-1(星际之门)》、(Trick'r Treat(别惹小孩)》、《Tucker&Dale vs.Evil(双宝斗恶魔)》、((World‘s Biggest and Baddest Bugs(虫霸天下)》、(Hard Core Logo(硬核标志)》、《Loya IOP position(白宫危机)》、《Ebenezer(守财奴)》、《Apollo18(阿波罗18号)》、(Ninja Turtles:The Next Mutation(忍者神龟:下一次突变)》、(TacticaI Force(战略力量)》、((Exception to the Rule(出轨边缘)》、(Bliss(爱欲疑狂)》、《Free Willy 3:The Rescue(人鱼童话3)》等电影和电视剧,有超过200部影视声音制作经验。 相似文献
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概括地评述了"减成法"生产PCB高密度化程度的发展与要求,它必然会遇到"制造极限"的挑战。挑战的主要内容是:(1)导线(体)的(L/S)精细化(度)的要求;(2)导线(体)表面光洁(平滑)度的要求;(3)导线(体)尺寸偏差或完整(无缺陷)性的要求;(4)导线(体)的位置(特别是层间对位)度的要求。 相似文献
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国际电信联盟(ITU)2000年世界无线电通信大会(WRC-2000)将2500-2690MHz频段(以下简称为2.6GHz频段)或部分频段作为IMT(国际移动通信)的全球通用频段。根据国际电联频率划分,在2.6GHz频段有卫星广播业务(电视)(BSS)、卫星广播业务(声音)(BSS(Sound))、卫星移动业务(MSS)(注:WRC-07会议之后仅国际电联定义的第三区国家保留了MSS划分)、 相似文献
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JIANG Wen-long DING Gui-ying WANG Jin WANG Jing WANG Li-zhong CHANG Xi HAN Qiang WANG Hong-mei ZHAO Xiao-hong 《光电子快报》2008,4(1):26-29
Highly efficient white phosphorescent organic light-emitting devices (WOLEDs) was fabricated using an electron/exciton blocker. The device structure is ITO/2T-NATA(25 nm)/NPBX(25-dnm)/CBP:5%Ir(ppy)3:0.5%Rubrene(8 nm)/NPBX(dnm)/ DPVBi(30 nm)/TPBi(20 nm)/Alq(10nm)/LiF(1nm)/A1, in which N,N ' -bis- (1-naphthyl)- N,N ' -dipheny1-1, 1 ' - biphenyl-4,4 i -diamine (NPBX) functions as a hole transport layer and electron/exciton blocker, 4,4,N,N ' dicarbazolebiphenyl (CBP) is host, 4,4' -bis(2,2 -diphenyl vinyl)-1,1 ' -biphenyl (DPVBi) is blue fluorescent dye, 5,6,11, 12,-tetraphenylnaphthacene (rubrene) is fluorescent dye, factris (2-phenylpyridine) iridium (Ir(ppy)3) is phosphorescent sensitizer and tris(8-hydroxyquinoline) aluminum (Alq3) is an electron transport layer. The WOLEDs have obtained white light emission by adjusting the thickness of NPBX, when the concentration of Ir(ppy)3 is 5-wt% and rubrene is 0.5-wt%, respectively, the thickness of the doped emissive layer is 8 nm, the WOLEDs show a maximum luminous efficiency is 11.2 cd/ A with d of 10 nm at 7 V and a maximum luminance of 28170 cd/m^2 at 17 V, the CIE coordinates is (0.37.0.42), which is in white region. 相似文献
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用传输矩阵法研究对称结构一维光量子阱 (AB)m(ABCBA)n(BA)m的光传输特性,结果发现:随n的增加,光量子阱(AB)5(ABCBA)n(BA)5的透射谱出现(2n-1)条共振透射峰,量子化效应明显;量子阱内部出现很强的局域电场:当n=1时,光量子阱(AB)m(ABCBA)1(BA)m内部局域电场强度随着m增加而增强,而当m=5时,光量子阱(AB)5(ABCBA)n(BA)5内部局域电场强度不随n的变化而改变,但局域范围扩大。这些光学传输特性,为光子晶体设计新型光学器件提供指导。 相似文献
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继2013年11月初发货首款20nm芯片后,赛灵思公司日前推出其20nm All Programmable UltraScale~(TM)产品系列,包括Kintex~((?))UltraScale~(TM)FPGA和Virtex~((?))UltraScale FPGA,并提供相关产品技术文档和Vivado~((?))设计套件支持。这些器件采用ASIC级可编程架构以及Vivado ASIC增强型设计套件和UltraFast~(TM)设计方法,可提供媲美ASIC级的性能优势。 相似文献
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如今的上网本市场风起云涌,各路“英雄好汉”纷纷现身:前有华硕(ASUS)、宏基(Acer)、联想(Lenovo)等传统电脑制造业内的强者;中有优派(ViewSonic)、七彩虹(Colorful)、艾尔莎(ELSA)等电脑配件及周边厂商;后有纽曼(Newsmy)、天时达(TELSDA)、万利达(MaIata)这类与电脑拉不上关系的厂商。不过这些厂商的产品要么同质化现象严重,要么价格上没有优势, 相似文献
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1前言
GPS全球定位系统的定位(P)、导航(N)和授时(T)服务,已成为战时武器系统效能的倍增器,并已称为现代武器系统不可或缺的环节,是美军实现其战略和战术意图重要基础设施。GPS系统的关键特性包括精度(Accuracy)、完好性(Integrity)、连续性(Continuity)、可用性(Availability)以及覆盖范围(Coverage),这些性能是时间和空间的函数。 相似文献
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White organic light-emitting devices based on fac tris(2- phenylpyridine) iridium sensitized 5,6,11,12-tetraphenylnap -hthacene 总被引:1,自引:0,他引:1
We have fabricated the white organic light-emitting devices (WOLEDs) based on 4,4' -bis(2,2 -diphenyl vinyl)-1,1' - biphenyl (DPVBi) and phosphorescence sensitized 5,6,11,12,-tetraphenylnaphthacene (rubrene). The device structure is ITO/2T-NATA (20 nm)/NPBX (20 nm)/CBP: x%Ir(ppy)3:0.5% rubrene (8 nm)/NPBX (5 nm)/DPVBi (30 nm)/Alq(30 nm)/LiF(0.5 nm)/A1. In the devices, DPVBi acts as a blue light-emitting layer, the rubrene is sensitized by a phosphorescent material, fac tris (2-phenylpyridine) iridium [Ir(ppy)3], acts as a yellow light-emitting layer, and N,N' -bis- (1-naphthyl)- N,N' -diphenyl -1, 1' -biphenyl-4,4' -diamine (NPBX) acts as a hole transporting and exciton blocker layer, respectively. When the concentration of Ir (PPY)3 is 6wt%, the maximum luminance is 24960 cd/m^2 at an applied voltage of 15 V, and the maximum luminous efficiency is 5.17 cd/A at an applied voltage of 8 V. 相似文献
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《电子工业专用设备》2012,41(10):69-69
2011年全球微机电(Micro Electro Mechanical-System;MEMS)前4大厂依序为德州仪器(Texas-Instruments)、意法半导体(STMicroelectronics)、惠普(HewlettPackard;HP)、博世(RobertBosch),除惠普为系统业者外,其他3家厂商均为整合元件厂(IntegratedDeviceManufacturer;IDM)。 相似文献