This circuit was found in a 1964 Electronic Design. The transistor may be a current equivalent of general use. The frequency ranges from 100 to 150 Hz.
This circuit was found in Radio Electronics magazine from November 1960. The circuit is powered by a...
In the figure we have an application in which the input and output voltage are equal, with the...
We found this circuit in a Radio Electronics from the 90s. The circuit is for conventional analog...