Schmitt Trigger Calculator

Calculate threshold voltages and hysteresis for Schmitt trigger circuits.

Circuit Parameters

Topology

V+ Supply (V)

V- Supply (V)

R1 (Ohms)

R2 (Ohms)

Reference Voltage Vref (V)

Threshold Voltages

3.750 V

VTH+ (Upper)

1.250 V

VTH- (Lower)

2.500 V

Hysteresis Width

Circuit Analysis

Center Voltage2.500 V

Feedback Ratio (beta)0.5000

Noise Immunity+/-1.250 V

Transfer Characteristic

Solid: rising input, Dashed: falling input

Applications

- Noise-immune switching and signal conditioning
- Wave shaping (sine to square conversion)
- Oscillator circuits (with RC feedback)
- Switch debouncing