This circuit can be used as an amplifier for musical instruments or even with your cell phone. The circuit is old and was found in the 1990 edition of Radio Electronics Experimenter magazine.
The voltage reference integrated circuit used in this 1980s unit is hard to find today. The power...
The circuit presented was suggested by National Semiconductor in its Linear Applications Handbook. The...
This low frequency oscillator with an operational amplifier of type 741 has adjustment of the mark...