The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
A single light path quantum efficiency measurement system, which has the properties of high test speed, high precision and good repetition, has been designed and successfully developed basing the monolithic structure of the multi-junction solar cell in order to realize its spectrum responses measurement. The principle of the quantum efficiency measurement was expatiated, and the structure of the measurement...
This paper introduces the circuit and working principle of the infrared isolation effectiveness of car windows film tester. The circuit of the tester was constituted mainly by frequency modulating infrared light source, silicon photovoltaic cells, I/V convertor, A/D convertor and so on. The infrared wavelength range of the infrared light source is broader than the single infrared LED testing, which...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.