This circuit was found in a 1967s Motorola documentation. The circuit regulates the voltage of an alternator for automotive use, for bench applications.
This circuit can serve as a basis for a digital mixer or simply for a noiseless switch of audio...
This traditional mixer configuration with a high input impedance was found in a 90’s Popular...
This medium wave radio works with any general purpose NPN transistor. The diode must be made of...