Found in American 90’s documentation, this circuit generates 300 Hz depending on the capacitors used. These components can be changed to obtain other frequencies.
This circuit was found in a 1976 documentation. It can be used with old tape recording mechanisms for...
This super regenerative detector circuit was found in an English documentation from 1963. The coil...
Found in an Elektor from the 90s, this circuit makes use of current components. The input voltage...