作为硬件工程师,不管做什么产品,一般都会用类似下面的PMOS开关电路,而且一般用做电源控制。 2、当控制信号PWR_EN为低时,三极管Q1不导通,那么R2下端相当于悬空。那么MOS管M1的栅极会被R1拉到和输入电压Vin一样,即Vgs=0,那么M1最终状态会是不导通。
NMOS在实际应用中为何比PMOS要更受欢迎,本文将从导电沟道、电子迁移率和器件速度等多个方面来展开讲解。 首先是在性能 ...
(1)T0-T1阶段,G端输出电平,CGS开始从0充电直至VGS(th),漏极源极之间的电压UDS与电路IDS保持不变,MOS管保持关断状态;另外此时的CGD的D端电压高于G端,但由于MOS管关断,RDS(等效为CDS)为无穷大,所以CGD两端电压基本保持不变,流经其电流也非常小。 (2)T1 ...
The James Webb Space Telescope captured images in the near-infrared wavelength range of the region near the Trapezium Cluster in the Orion Nebula. [Photo provided to chinadaily.com.cn] Deep in space, ...
As companies begin to re-invest in capital projects post recession, project management offices (PMOs) need to gear up to facilitate these new plans. But that doesn’t mean they need to adopt more ...