What does Q factor represent physically?

Q = 2π × (energy stored / energy dissipated per cycle). High Q circuits store much more energy than they lose per cycle, producing sharp resonance. Q = 100 means 100 cycles to lose 1/e of energy.

What Q do real inductors achieve?

Air core inductors: Q = 50-300. Ferrite core at HF: Q = 50-150. Iron core at 50/60 Hz: Q = 5-30 (core losses). Superconducting inductors: Q = 10⁵+. Q decreases at high frequency due to skin effect.

What Q factor is typical for crystal resonators?

Quartz crystals: Q = 10,000-500,000. Overtone crystals: Q up to 10^6. MEMS resonators: Q = 1,000-100,000. Compare to LC tank circuit: Q = 50-200. This is why crystals give superior frequency stability.

Q Factor Calculator

Calculate quality factor Q = f₀/BW = ω₀L/R = 1/(ω₀RC) = (1/R)√(L/C). Energy stored vs dissipated per cycle. High Q = low damping, narrow bandwidth. Component Q for inductors and capacitors.

2D stress state at a point. All stresses in MPa.

σx — Normal Stress X (MPa)

σy — Normal Stress Y (MPa)

τxy — Shear Stress (MPa)

⚙ Mechanical Note: Results are based on standard textbook formulas and ISO/AASHTO references. Always verify critical designs with applicable codes (ISO 898, AASHTO 1993, AISC, Eurocode 3) and a qualified engineer.

How to Use

Enter the values for the patient or scenario you are assessing. Calculate quality factor Q = f₀/BW = ω₀L/R = 1/(ω₀RC) = (1/R)√(L/C). Energy stored vs dissipated per cycle. High Q = low damping, narrow bandwidth. Component Q for inductors and capacitors. Use the q factor result to inform your clinical assessment.

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Frequently Asked Questions

What does Q factor represent physically?

What Q do real inductors achieve?

What Q factor is typical for crystal resonators?