This circuit was found in the September 1984 issue of Radio Electronics magazine. The frequency is given by the capacitors. The diodes help in the starting process.
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...