Schmitt Trigger Calculator
Find the upper and lower switching thresholds and hysteresis width of an inverting or non-inverting op-amp Schmitt trigger from R1, R2, Vref and output levels.
Physics Reference
5 tools
Which Physics Reference tool do you need?
| Tool | What it answers |
|---|---|
| Comparator Calculator | An inverting comparator with positive feedback switches at V+ = (Vref·R1 + Vout·R2) ÷ (R1 + R2). |
| LC Resonance Calculator | An ideal LC circuit resonates at f₀ = 1 ÷ (2π√(LC)), where the inductive and capacitive reactances are equal and cancel. |
| LC Tank Calculator | An LC tank resonates where the inductive and capacitive reactances are equal: f = 1 ÷ (2π√(LC)). |
| Schmitt Trigger Calculator | A Schmitt trigger switches at two different input voltages. |
| Series Parallel Combined | For a combined circuit, reduce it piece by piece: series resistors add, parallel ones combine as product over sum. |
All tools
LC Tank Calculator
Find the resonant frequency of an inductor and capacitor, or the L or C needed for a target frequency. 100 µH with 100 pF resonates at 1.592 MHz.
Comparator Calculator
Find the upper and lower switching thresholds and hysteresis width of an inverting comparator with positive feedback from Vref, R1, R2 and output levels.
Series Parallel Combined
Finds the equivalent resistance of three resistors wired R1 + (R2 ∥ R3) or (R1 + R2) ∥ R3, with optional supply current and power from Ohm's law.
LC Resonance Calculator
Find the resonant frequency of an inductor and capacitor pair from L and C in H to nH and F to pF, plus angular frequency, period and reactance at resonance.