20 kHz ring counter (CB6138E)

We found this circuit in an old General Electric documentation. In fact, PUTs are not common components today. The circuit is valid as a reference.

| Clique na imagem para ampliar |

Sequential unijunction timer (CB10190E)
This circuit with unijunction transistors was found in a documentation from the 80's. The trigger...
Video driver with impedance matching (CB20915E)
In this circuit of an old American documentation, the input impedance is the same as the output...
18 V Voltage Doubler (CB20180E)
In the figure we have the way to obtain a voltage of 18 V from a 6.3 V transformer with central...