有关于开关电源的可靠性试验,比较全面的项目测试
上传时间: 2013-10-23
上传用户:onewq
Abstract: Rail splitting is creating an artificial virtual ground as a reference voltage. It is used to set the signalto match the op amp's "sweet spot." An op amp has the most linear- and distortion-free qualities at that sweetspot. Typically, the sweet spot occurs near the center between the single power rail and ground. In the case ofa number of signals, the virtual ground can control channel DC errors when multiplexing or switching thesignals.
上传时间: 2013-10-23
上传用户:wushengwu
针对目前智能家居结构复杂,成本高昂等的缺点,利用开关电源和单片机设计了一种无线智能家居系统。它将控制指令由遥控器通过无线方式发送到控制器上的无线模块,再由无线模块将指令解析给单片机,通过由单片机控制的开关电源来控制继电器的开和关,从而达到智能化控制家电电源开关的目的。通过实验证实了该系统安全可靠,性能稳定,达到了设计要求,同时该系统除用于家庭设备的无线自动控制外,也可用于家庭通信、家庭安全防范,组建智能家居控制系统等。
上传时间: 2013-10-23
上传用户:梧桐
就中性点非绝缘系统电能计量装置的接线方式和电能表启动电流值的选择进行论述,并用实例说明接线方式和启动电流值对计量的影响。
标签: 电能计量
上传时间: 2013-10-23
上传用户:yanming8525826
研究了MPP电荷耦合器件(CCD)暗电流和暗电流非均匀性的温度特性,并与非MPP CCD的暗电流和暗电流非均匀性的温度特性进行了对比分析。研究结果表明,MPP CCD抑制了表面暗电流,相较于非MPP CCD具有较低的暗电流和暗电流非均匀性,可以承受更高的工作温度。
上传时间: 2013-10-23
上传用户:netwolf
Abstract: Some types of loads require more current during startup than when running. Other loads can be limited to a lower-powercurrent during startup but require a higher operating current. This article describes an application circuit that automatically adjusts apower circuit’s overcurrent protection level up or down after startup is complete.
上传时间: 2013-10-23
上传用户:swaylong
当控制端电压为0时,Q1基极电压为(12-0.7=11.3V),改变R1的大小便可改变基极电流,当基极电流足够大时,三极管饱合。
上传时间: 2013-10-23
上传用户:wyiman
现在常用的软启动器主要有三种:电子式、磁控式和自动液体电阻式。 电子式以晶闸管调压式为多数。变频器在某种意义上也是一种软启动器,而且是能够真正地实现软启动的启动器,但设备较贵,为降低水电站单位千瓦造价,目前很少采用。
上传时间: 2013-10-23
上传用户:dingdingcandy
The MAX14885E, a 2:2 VGA switch, connects a VGA source to a VGA monitor. To ease direct connection to graphics controllers orthe ASIC, the MAX14885E has two supplies: VCC, a 5V ±5% supply, drives the VGA side interface; and the VL supply sets the logicswitching thresholds on the digital input pins (EN, S00, S01, S10, S11, SHA, SHB, SVA, and SVB). This application note documentsthe proper sequencing of the VCC and VL power supplies on power-up.
上传时间: 2013-10-23
上传用户:wuchunzhong
In general, a Hot Swap controller provides two importantfunctions to boards that can be plugged and unpluggedfrom a live backplane:
上传时间: 2013-10-23
上传用户:行者Xin