Additional Pull Pull (CB6119E)

This stage was found in a 1964 Electronic Design. The transistors are of the time and the shape of the signal obtained is shown in the diagram.

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Timer (CB5978E)
In the figure we have a simple timer with two voltage comparators of the four of an LM339. The...
Signal Weighting Circuit (CB25965E)
This circuit can be used in a signal level indicator with LEDs. The circuit is from an Electronics Now...
Germanium Transistor Voltage Regulator (CB987E)
This circuit, found in an old magazine of the year 1968, uses a Power germanium transistor. This...