This circuit doubles the frequency of a rectangular signal applied to its input. The circuit has a 30 kHz input to obtain 60 kHz signals. We found it in a 1964 Electronic Design.
This step uses germanium transistors such as the AC151, GE2, and others having been found in a...
This circuit was obtained in an Electronic Design from the 80's. It has the adjustment of the gain...
We found this high input impedance, low output impedance amplification stage in the October 1993...