随着消费者购买便携设备数量的增多,他们也被具有各种非标准连接器的诸多电源适配器所束缚。为了解决这一问题,微型USB接口成为电池充电和数据传输的标准。MAX14578AE/MAX14578E过压保护充电检测器和限流开关大大简化了微型USB端口的设计,从而使终端用户操作更加轻松
上传时间: 2013-10-09
上传用户:chukeey
Abstract: In battery-powered RF transmitters such as garage door openers and remote keyless entry for cars, as the battery drains,
上传时间: 2013-10-23
上传用户:nanxia
What would happen if someone connected 24V to your12V circuits? If the power and ground lines were inadvertentlyreversed, would the circuits survive? Does yourapplication reside in a harsh environment, where the inputsupply can ring very high or even below ground? Evenif these events are unlikely, it only takes one to destroya circuit board.
上传时间: 2013-10-26
上传用户:jackandlee
数字电压表是大学物理教学和实验中的重要仪表,其数字化是指将连续的模拟电压量转换成不连续、离散的数字量并加以显示。传统的实验用模拟电压表功能单一、精度低、体积大,且存在读数时的视差,长时间连续使用易引起视觉疲劳,使用中存在诸多不便。而目前数字万用表的内部核心多是模/数转换器,其精度很大程度上限制了整个表的准确度,可靠性较差。
上传时间: 2013-10-16
上传用户:牛津鞋
LED显示屏品种繁多,价格战逐渐弥漫,竞争日益白热化,各厂家甚至对同一款产品报价都不一样。其实,熟悉LED显示屏行业的人都知道,有很多因素制约着LED显示屏的价格:比如显示屏的规格,材料系统配套因素和施工因素等等,无一不是价格的决定因素。
上传时间: 2013-10-09
上传用户:lingfei
LED在电子系统中使用已经有很多年了,主要用作电子设备的指示灯。现在在亮度和色彩深度方面取得的重大进步,意味著LED现在可以用于更广泛的应用,从手机和多媒体播放机中的背光,汽车仪表盘、尾灯,一直到取代商业和家庭照明应用中的传统光源。
上传时间: 2013-11-07
上传用户:zhengzg
光具有波动性和粒子性,但在应用光学的范围内,光是作为波动来讲的,它具有波动的一切特性,比如波长、频率、以及传播速度等。(光波的传播速度ν=c/n)
上传时间: 2013-11-05
上传用户:change0329
Specifying the right reference and applying it correctly isa more difficult task than one might first surmise, consideringthat references are only 2- or 3-terminal devices.Although the word “accuracy” is most often spoken inreference to references, it is dangerous to use this wordtoo freely because it can mean different things to differentpeople. Even more perplexing is the fact that a referenceclassified as a dog in one application is a panacea inanother. This application note will familiarize the readerwith the various aspects of reference “accuracy” andpresent some tips on extracting maximum performancefrom any reference.
标签: 电压基准
上传时间: 2013-10-15
上传用户:liuwei6419
埋地灯灯体为压锛或不锈钢等材料,坚固耐用,防渗水,散热性能优良;面盖为304#精铸不锈钢材料,防腐蚀,抗老化;硅胶密封圈,防水性能优良,耐高温,抗老化;高强度钢化玻璃,透光度强,光线辐射面宽,承重能力强;所有坚固螺丝均用不锈钢;防护等级达IP67.
上传时间: 2013-11-14
上传用户:tedo811
Designers spend much time combating thermal effects incircuitry. The close relationship between temperature andelectronic devices is the source of more design headachesthan any other consideration.
上传时间: 2013-10-17
上传用户:风之骄子