Instantly calculate the high threshold voltage (VTH) and low threshold voltage (VTL) for your Schmitt Trigger circuit. Our online tool simplifies designing stable digital and analog systems with precise hysteresis, preventing noise-induced false triggering and ensuring robust voltage level detection.
Formula:
This calculator determines the high (VTH) and low (VTL) threshold voltages for a common op-amp inverting Schmitt Trigger configuration using the following formulas:
High Threshold Voltage (VTH):
VTH = (Rg / (Rf + Rg)) × VSAT+
Low Threshold Voltage (VTL):
VTL = (Rg / (Rf + Rg)) × VSAT-
Where:
Rf: Feedback Resistor (from op-amp output to non-inverting input)Rg: Ground Resistor (from op-amp non-inverting input to ground)VSAT+: Op-Amp's Positive Output Saturation VoltageVSAT-: Op-Amp's Negative Output Saturation Voltage