![voltage reference - Flip a Schmitt-Trigger when current flows through a Zener diode - Electrical Engineering Stack Exchange voltage reference - Flip a Schmitt-Trigger when current flows through a Zener diode - Electrical Engineering Stack Exchange](https://i.stack.imgur.com/kCRsp.png)
voltage reference - Flip a Schmitt-Trigger when current flows through a Zener diode - Electrical Engineering Stack Exchange
GATE-EC - In the Schmitt trigger circuit shown below, the Zener diodes have Vz (reverse saturation voltage) = 6V and VD (forward voltage drop) = 0.7V If the circuit has the input lower trip
![voltage reference - Flip a Schmitt-Trigger when current flows through a Zener diode - Electrical Engineering Stack Exchange voltage reference - Flip a Schmitt-Trigger when current flows through a Zener diode - Electrical Engineering Stack Exchange](https://i.stack.imgur.com/xAQ7C.png)