排序方式: 共有9条查询结果,搜索用时 640 毫秒
1
1.
2.
3.
介绍了一种微波功率模块高压电源的设计方案,分析了其工作原理,并详细介绍了零电压开关多谐振变换模式、高压变压器和高压整流器等关键电路的设计。该高压电源具有小型化、高密度、高效率、高可靠性等优点。实验结果证明了该高压电源的优越性和实用性,能满足微波功率模块发射机的要求。 相似文献
4.
5.
介绍了115 V/400 Hz三相高功率因数高压电源的工作原理,阐述了三相脉宽调制整流器的电路拓扑、数学模型、dp轴两相解耦的双闭环控制方法以及基于TMS320F2808全数字控制器的硬件配置和软件流程,说明了全桥逆变电路和倍压整流电路的设计方法,最后分析了样机的实验波形和测试结果,证明了高功率因数高压电源设计方法的正确性和有效性。 相似文献
6.
Valley polarization in transition metal dichalcogenide layered semiconductors: Generation,relaxation, manipulation and transport
下载免费PDF全文
![点击此处可从《中国物理 B》网站下载免费的PDF全文](/ch/ext_images/free.gif)
In recent years, valleytronics researches based on 2D semiconducting transition metal dichalcogenides have attracted considerable attention. On the one hand, strong spin–orbit interaction allows the presence of spin–valley coupling in this system, which provides spin addressable valley degrees of freedom for information storage and processing. On the other hand, large exciton binding energy up to hundreds of me V enables excitons to be stable carriers of valley information.Valley polarization, m... 相似文献
7.
Image segmentation of exfoliated two-dimensional materials by generative adversarial network-based data augmentation
下载免费PDF全文
![点击此处可从《中国物理 B》网站下载免费的PDF全文](/ch/ext_images/free.gif)
Mechanically cleaved two-dimensional materials are random in size and thickness. Recognizing atomically thin flakes by human experts is inefficient and unsuitable for scalable production. Deep learning algorithms have been adopted as an alternative, nevertheless a major challenge is a lack of sufficient actual training images. Here we report the generation of synthetic two-dimensional materials images using StyleGAN3 to complement the dataset. DeepLabv3Plus network is trained with the synthetic ... 相似文献
8.
9.
为了满足大功率射频组件的大电流窄脉冲用电需求,文中提出了一种高效率、高密度和高可靠的负载点电源设计方案,给出了负载点电源的电路组成、核心元器件、关键电路参数计算方法,并提出了完善的过流、过压和过脉宽的保护电路设计方法。根据设计方案,研制了一台高电压、高频率、高密度和高效率的实验样机。通过样机的实验波形和测试数据,证明了负载点电源设计方法的正确性和有效性。 相似文献
1