Schmitt Trigger Rechner
Berechnen Sie Schmitt trigger upper und lower thresholds und hysteresis width.
Upper Threshold (V_TH)
1.091 V
Upper Threshold (V_TH) vs Positive Saturation
Formel
## Inverting Schmitt Trigger ### Formulas **V_TH = V_sat+ x R1 / (R1 + R2)** **V_TL = V_sat- x R1 / (R1 + R2)** **Hysteresis = (V_sat+ - V_sat-) x R1 / (R1 + R2)** The ratio R1/(R1+R2) sets the threshold as a fraction of the saturation voltages.
Lösungsbeispiel
Op-amp saturates at +/-12 V, R1 = 10k, R2 = 100k.
- 01V_TH = 12 x 10/110 = 1.091 V
- 02V_TL = -12 x 10/110 = -1.091 V
- 03Hysteresis = 24 x 10/110 = 2.182 V
Häufig Gestellte Fragen
What is a Schmitt trigger used for?
Converting noisy or slowly changing signals into clean digital edges. Common in signal conditioning and oscillators.
How do I make the thresholds asymmetric?
Add a voltage divider bias to the non-inverting input or use diodes to create different feedback paths.
Inverting vs non-inverting Schmitt trigger?
Inverting: input to inv. pin, feedback to non-inv. Non-inverting: input to non-inv., feedback also to non-inv. Formulas differ.
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