This circuit was suggested by Motorola in a 1969 publication. It makes use of components of the time, but both the FET and the bipolar may be general purpose current types.
This is one of the many hysteresis comparator circuits the reader may find in this section and on this...
The circuit shown in the figure generates a square signal (50% active cycle) when the pressure switch...
The purpose of this circuit is to measure the intensity of audio signals. We found it in the...