10 MHz counter (CB20128E)

This meter has a 0.001% tolerance and was found in an old American publication. The circuit has a selectable output.

| Clique na imagem para ampliar |

Telegraphy practice Oscillator (CB23677E)
This simple circuit is from a Radio Electronics from July 1965. The circuit can be assembled with...
Delayed start alarm (CB24379E)
Found in the May 1975 issue of Radio Electronics magazine, this circuit turns on after a certain...
Bootstrap with capacitor (CB8939E)
We found this circuit in a 1965 General Electric documentation. The circuit generates synchronized...