This 3-transistor buzzer or buzzer is a classic type found in the July 1998 issue of Electronics Now magazine. The power rating depends on the output transistor.
This cricket circuit obtained in a 1992 documentation has an amplifying stage that, however, takes...
This circuit was found in a 1980s English publication, but can still be easily assembled by the...
This circuit is from old documentation, but can be adapted to use modern components. Power...