This simple circuit for headphones or small speakers was found in documentation from the 90s. The circuit works with voltages from 5 to 9 V and has good gain.
Found in a 90s Radio Electrconics, this circuit is an operational one with a power stage using two...
This two-tone decoder has a bandwidth of 24%. The circuit is from a 1994 Electronics Now. The...
We found this circuit in documentation from the 90s. The circuit uses components that are still...