Found in a 90’s Radio Electronics, this circuit uses a component from the time, difficult to find today. It generates 12 tones in different octaves.
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...