Metal detector (CB7888E)

This circuit was found in a 1970s RCA publication. Transistors support modern equivalent types. Observe the dimensions of the explorer coil.

| Clique na imagem para ampliar |

Sequential Upand Down (CB4579E)
This circuit uses components that are still common despite being from 1995 documentation. The circuit can...
400V Neon Regulator (CB8824E)
Found in an old American documentation, this circuit uses neon lamps as a reference to obtain a...
555 Pulse Width Generator (CB25959E)
This pulse width-tuned circuit was found in the March 1996 issue of Electronics Now magazine. The...