The new type DC solid state relay is a kind of new contactless switching device, with the new type IGBT and power field effect tube as the core and composed completely by solid state electron devices.
Card readers of contactless integrated card are the pivotal device in application systems of contactless IC.
非接触式IC卡读卡器是非接触式IC卡应用系统的关键设备之一。
3
Invent and construct an optical device that USES a laser pointer and allows contactless determination of thickness, refractive index, and other properties of a glass sheet.