This sensitive receiver for the medium wave range was found in Radio Electronics magazine from December 1960. The circuit has a headphone output and is powered by just 3 V.
This balance indicator for stereo amplifiers was found in an 80's Elektor. The components used are...
This circuit is from National Semiconductor using an LM11, which is uncommon nowadays. The circuit...
The circuit shown in the figure on the right can be used on a data transfer bus with the use of an...