4-band converter (T1317E)

This 4-waveband converter circuit was found in Radio Craft September 1948. The power supply is not given, but the supply voltages are indicated.

| Clique na imagem para ampliar |

Sine to square converter (CB7329E)
Using a 555 this circuit was found in old documentation, but it is still valid. | Clique na imagem...
Square Generator 555 (CB10547E)
This circuit was obtained in a 1976 magazine. We can use the 555 and another BC548 to generate square...
Divide-by-3 Counter (CB158E)
The circuit presented here shows how two flip-flops of a 4027 can be connected to perform a...