We found this circuit that protects speakers against current surges that occur when the amplifier is turned on in a Radio Electronics from August 1991.
We found this circuit in an old documentation. The integrated circuits used are specific to...
The integrated circuit used in this application is uncommon today and specific to the application, as it...
This 3-transistor buzzer or buzzer is a classic type found in the July 1998 issue of Electronics Now...