This 2-quadrant modulator circuit was found in the May 1988 issue of Radio Electronics magazine. The CA3080 is an OTA operational amplifier.
This circuit changes an audio signal to get better reproduction. It is important when editing...
Found in an American documentation from 1992, this circuit for medium and short waves uses a CI of...
This circuit indicates when the voltage of a 12 V battery is low. With changes, for example, the...