We found this circuit in a 1965 Electronic Design. Transistors are still common but admit equivalents for some of them. The circuit drains a current of only 4 mA.
This contact or reed switch actuation was found in a 1964 Electronic Design. The circuit can be...
This effects circuit can be used with microphones or guitars. The circuit is from an American...
This circuit isolates na áudio signal or digital signal up to 100 kHz, applying it to a gain 10...