This isolation circuit for audio signals was found in the August 1992 issue of Radio Electronics magazine. The circuit can be applied to other operational amplifiers.
This beat frequency oscillator was found in a 1980s documentation. The original FET has a grounded...
This game was found in Radio Electronics from the 90s. The components used are common except some...
November 2016 - The Arduino Zero board, a 32-bit extension of the Arduino Uno for innovative IoT...