Tone Control (CB6306E)

This circuit was found in an Electronics World of 1969. The components of the time. The operational can be replaced by modern equivalent type.

| Clique na imagem para ampliar |

Walk Talkie for 1 km (CB3826E)
This circuit using components that are still common in our market was found in a 1987...
Universal Tester (CB11843E)
This circuit was obtained in a 1998 publication, but it can be easily assembled. The circuit...
Gas laser source with start circuit (CB7839E)
Found in a 73 magazine for radio amateurs of the 90s, this circuit provides a 2 kV voltage with 7.5...