常用电子管封装库protel99se，包括原理图库和PCB封装库-tube protel99se

电子管protel99 自建库。protel电子管设计好工具-Tube protel99 self libraries. protel good tool tube design

multisim的元器件库 ，主要是电子管元件库，大概有一百多种电子管，基本上所需用的电子管都包含了。(Multisim component library, mainly electronic components library, there are more than one hundred kinds of electronic tubes, basically the required electronic tubes are included.)

multisim10国产电子管库,包含大部分常见国产电子管(Multsim10 home-made electronic tube library, including most of the common home-made electronic tubes)