Simple Schmitt Trigger Wiring diagram Schematic

This is a Simple Schmitt Trigger Circuit Diagram. Schmitt trigger is a comparator schema with hysteresis, implemented by applying positive feedback to the non-inverting input of a comparator. In this schema By replacing the common-emitter resistor in a conventional Schmitt by a zener diode the hysteresis normally associated with these diagram is eliminated. 

Simple Schmitt Trigger Circuit Diagram