REDUCTION OF HYSTERESIS IN FIXED THRESHOLD SCHMITT TRIGGER
Original Publication Date: 1980-Aug-01
Included in the Prior Art Database: 2001-Oct-10
The CMOS hex Schmitt trigger can be a very useful tool in the design of audio frequency circuits, such as limiters, frequency and signal amplitude detectors except for one inherent limitation. The magnitude of the hysteresis is a fixed ratio of the supply voltage (typically 113 of supply). Since the supply voltage for a design is usually a given, the application of this device for the circuits mentioned above would be severely limited.