This circuit was found in an American documentation from 1966. The transistors are from that time...
Chinese 基本信息 > 出版社: 科学 (2007年4月1日) 平装 语种： 简体中文 ISBN: 7030186605 条形码: 9787030186607 品牌: 博库 ASIN:...
This 0.5 Hz filter was found in the December 1990 issue of Radio Electronics magazine. The power...
