This circuit was found in the February 1992 issue of Radio Electronics magazine. The circuit provides stepped frequencies as shown in the diagram.
We found this circuit in a 1999 publication. All the components used are still common and the...
We found this timer circuit in an American documentation from the 1980s. The circuit uses the 6 V...
A single high-power transistor MJ15003 is used in the circuit in the figure to generate strong...