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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LM3900 Buffer (CB14186E)
We found the configuration below, with unit gain, in the National Semiconductor Linear...
Proportional temperature controller (CB21277E)
This circuit is from an Electronic Design from the 90's. The main integrated circuit is uncommon...
Active Low Pass Filter (CB20091E)
This circuit appears on this site from different sources. This is from documentation from the...