This circuit was found in Radio Electronics from the 90s. The components used are common, and the transistors and CIs must be equipped with heat sinks.
Found in Maxim's documentation from the 90's, this circuit uses a component from the time and has its...
The accuracy of this simple circuit depends on the accuracy of the input circuit resistors. Any...
In fact, this is the circuit also known as “vox”, that is, a relay triggered by sound. This...