Power Integrations公司的InnoSwitch TM3-TN系列极大地增加了电器,消费类产品和工业应用的辅助电源的效率.器件非常适合隔离和非隔离的设计,这种先进的反激控制器能达到高达90%的满负载效率,在负载范围内有平坦的效率和非常低的无负载...Power Integrations公司的InnoSwitch TM3-TN系列极大地增加了电器,消费类产品和工业应用的辅助电源的效率.器件非常适合隔离和非隔离的设计,这种先进的反激控制器能达到高达90%的满负载效率,在负载范围内有平坦的效率和非常低的无负载损耗.InnoSwitch3-TN可以用作精确的5V单输出电源,具有两个正轨或正与负的轨.展开更多
Based on a simple description of RSS and the background of its application in the virtual reference system, this paper introduces the application range and the system structure of RSS technology in this system, and an...Based on a simple description of RSS and the background of its application in the virtual reference system, this paper introduces the application range and the system structure of RSS technology in this system, and analyzes its data flow. Finally, the paper uses“My reference desk”as an example to discuss the realization of RSS technology in the virtual reference system.展开更多
随着网络快速发展,高校中图书馆传统咨询方式受到强烈冲击,为了快捷方便利用图书馆中各种形式资源,数字参考咨询服务应运而生。本文结合高校教师和学生实际需求,从快捷方便解答用户入手,通过校园网络,利用SQL Server 2000和ASP开发工具...随着网络快速发展,高校中图书馆传统咨询方式受到强烈冲击,为了快捷方便利用图书馆中各种形式资源,数字参考咨询服务应运而生。本文结合高校教师和学生实际需求,从快捷方便解答用户入手,通过校园网络,利用SQL Server 2000和ASP开发工具开发出数字参考咨询系统,投入运行半年来,运行效果良好。展开更多
文摘Based on a simple description of RSS and the background of its application in the virtual reference system, this paper introduces the application range and the system structure of RSS technology in this system, and analyzes its data flow. Finally, the paper uses“My reference desk”as an example to discuss the realization of RSS technology in the virtual reference system.