This noise generator for the audio band was found in a British publication from the 1970s. The circuit can be implemented with modern equivalent transistors.
This circuit was found in a 1963 publication. Its purpose is to test general purpose NPN and PNP...
This circuit provides a pulse train of 4 MHz or at another frequency determined by the crystal during...
TL series and CA3140 operational amplifier can be used in this bass and treble control circuit. We found...