Engineering
Electronics & Mechanical Engineering
About Engineering Calculators
Votre outil de calcul en ligne professionnel dédié à la catégorie engineering. Obtenez des résultats instantanés et ultra-précis basés sur des modélisations mathématiques reconnues, avec schémas explicatifs et étapes de calcul détaillées pour faciliter vos analyses quotidiennes et académiques.
- ✓Calculs en temps réel de haute précision et traitement instantané.
- ✓Graphiques dynamiques interactifs et démonstrations étape par étape.
- ✓Interface élégante optimisée pour tous les navigateurs et 100% confidentielle.
Electronics & Mechanical Engineering
Engineering — Frequently Asked Questions
How do I calculate the correct resistor for an LED circuit?
Use Ohm's law: R = (V_supply − V_LED) / I_LED. For a typical red LED (V_LED ≈ 2V, I_LED ≈ 20mA) on a 5V supply: R = (5 − 2) / 0.02 = 150Ω. Also check power rating: P = I²R = 0.02² × 150 = 0.06W, so a standard ¼W resistor is sufficient. Our Ohm's law calculator automates these computations.
What is the formula for gear ratio and mechanical advantage?
Gear ratio = Number of teeth on driven gear ÷ Number of teeth on driver gear. A ratio > 1 means speed reduction with torque multiplication; a ratio < 1 means speed increase with torque reduction. For compound gear trains, multiply individual stage ratios. Mechanical advantage in ideal gears equals the gear ratio (neglecting friction losses).
Les résultats de ce calculateur sont-ils fiables ? (3)
Beam deflection depends on load type, support conditions, material stiffness (Young's modulus E), and cross-section geometry (moment of inertia I). For a simply supported beam with center load: δ = PL³/(48EI). For a cantilever with end load: δ = PL³/(3EI). Our beam calculator handles multiple load and support configurations using Euler-Bernoulli beam theory.
Les résultats de ce calculateur sont-ils fiables ? (4)
In parallel, capacitances add: C_total = C₁ + C₂ + ... (like resistors in series). In series, reciprocals add: 1/C_total = 1/C₁ + 1/C₂ + ... (like resistors in parallel). This is because parallel capacitors increase effective plate area, while series capacitors increase effective plate separation. Our capacitor calculator handles both configurations.
Are these engineering calculators suitable for professional design work?
Our calculators implement standard engineering formulas and are suitable for preliminary design estimates, educational purposes, and quick verification checks. However, professional engineering design requires compliance with specific codes (NEC, ASME, Eurocode), safety factors, environmental conditions, and professional engineering judgment. Always validate critical designs with licensed professional engineers and code-compliant analysis tools.