%0 Journal Article
%T RESEARCH ON HIGH PRECISION LOGARITHMIC AMPLIFYING CIRCUIT<br>高准确度对数函数电路的探讨和实现
%A Kong Junbao
%A <br>孔俊宝
%J 电子与信息学报
%D 1987
%I 
%X A high precision logarithmic amplifier with wide passband is achieved by using the charge and discharge of RC and the method of pulse-width modulation. It can be used in the astronomy, astronavigation, accurate measurement, communication etc. The theoretical analysis of the circuit is given. A practical circuit is constructed, and the experimental result shows that the logarithmic function for the circuit reaches 99% of the theoretical value.
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=1319827C0C74AAE8D654BEA21B7F54D3&jid=EFC0377B03BD8D0EF4BBB548AC5F739A&aid=EAD23ADA4E18FFC5&yid=9C2DB0A0D5ABE6F8&vid=9CF7A0430CBB2DFD&iid=94C357A881DFC066&sid=B79ACB6EBBFC9730&eid=216EFB25F7F834CC&journal_id=1009-5896&journal_name=电子与信息学报&referenced_num=0&reference_num=4