Le matériel
Calcul de résistance
La valeur de rang m de la série En est obtenue en posant . $\big(\sqrt[n]{10}\big)^{m}$
Le résultat «x» d'un calcul donne 6,73 ohms comme valeur de résistance.
Quelle est la valeur la plus proche dans la série «n» E24 ?
Il faut d'abord retrouver à quel rang «m» proche appartient cette valeur dans la série E24.
Avec x= 6,73, n= 24, m= ?
$m=log_{10}(6,73^{24})$=
19.872361541375 arrondi donne 20
La valeur la plus proche appartient au rang 20 de la série E24.
Calcul de la valeur : $\big(\sqrt[24]{10}\big)^{20}$=
6.8129206905796 soit 6.8Ω
| R | Anneaux | Dizaine | Unité | Multiplicateur | Tolérence | Quantité |
| 1 Ω | | 1 'marron' | 0 'noir' | x0.1 'or' | ±5% 0.05Ω 'or' | 10 |
| 2.2 Ω | | 2 'rouge' | 2 'rouge' | x0.1 'or' | ±5% 0.11Ω 'or' | 5 |
| 10 Ω | | 1 'marron' | 0 'noir' | x1 'noir' | ±5% 0.5Ω 'or' | 10 |
| 15 Ω | | 1 'marron' | 5 'vert' | x1 'noir' | ±5% 0.75Ω 'or' | 5 |
| 22 Ω | | 2 'rouge' | 2 'rouge' | x1 'noir' | ±5% 1.1Ω 'or' | 5 |
| 33 Ω | | 3 'orange' | 3 'orange' | x1 'noir' | ±5% 1.65Ω 'or' | 5 |
| 39 Ω | | 3 'orange' | 9 'blanc' | x1 'noir' | ±5% 1.95Ω 'or' | 5 |
| 47 Ω | | 4 'jaune' | 7 'violet' | x1 'noir' | ±5% 2.35Ω 'or' | 5 |
| 51 Ω | | 5 'vert' | 1 'marron' | x1 'noir' | ±5% 2.55Ω 'or' | 5 |
| 68 Ω | | 6 'bleu' | 8 'gris' | x1 'noir' | ±5% 3.4Ω 'or' | 5 |
| 72 Ω | | 7 'violet' | 2 'rouge' | x1 'noir' | ±5% 3.6Ω 'or' | 5 |
| 100 Ω | | 1 'marron' | 0 'noir' | x10 'marron' | ±5% 5Ω 'or' | 10 |
| 120 Ω | | 1 'marron' | 2 'rouge' | x10 'marron' | ±5% 6Ω 'or' | 10 |
| 150 Ω | | 1 'marron' | 5 'vert' | x10 'marron' | ±5% 7.5Ω 'or' | 3 |
| 180 Ω | | 1 'marron' | 8 'gris' | x10 'marron' | ±5% 9Ω 'or' | 5 |
| 270 Ω | | 2 'rouge' | 7 'violet' | x10 'marron' | ±5% 13.5Ω 'or' | 5 |
| 220 Ω | | 2 'rouge' | 2 'rouge' | x10 'marron' | ±5% 11Ω 'or' | 3 |
| 330 Ω | | 3 'orange' | 3 'orange' | x10 'marron' | ±5% 16.5Ω 'or' | 10 |
| 390 Ω | | 3 'orange' | 9 'blanc' | x10 'marron' | ±5% 19.5Ω 'or' | 5 |
| 470 Ω | | 4 'jaune' | 7 'violet' | x10 'marron' | ±5% 23.5Ω 'or' | 10 |
| 500 Ω | | 5 'vert' | 0 'noir' | x10 'marron' | ±5% 25Ω 'or' | 10 |
| 510 Ω | | 5 'vert' | 1 'marron' | x10 'marron' | ±5% 25.5Ω 'or' | 5 |
| 680 Ω | | 6 'bleu' | 8 'gris' | x10 'marron' | ±5% 34Ω 'or' | 3 |
| 820 Ω | | 8 'gris' | 2 'rouge' | x10 'marron' | ±5% 41Ω 'or' | 5 |
| 1 kΩ | | 1 'marron' | 0 'noir' | x100 'rouge' | ±5% 50Ω 'or' | 20 |
| 1.2 kΩ | | 1 'marron' | 2 'rouge' | x100 'rouge' | ±5% 60Ω 'or' | 4 |
| 1.5 kΩ | | 1 'marron' | 5 'vert' | x100 'rouge' | ±5% 75Ω 'or' | 10 |
| 1.7 kΩ | | 1 'marron' | 7 'violet' | x100 'rouge' | ±5% 85Ω 'or' | 4 |
| 2.2 kΩ | | 2 'rouge' | 2 'rouge' | x100 'rouge' | ±5% 110Ω 'or' | 9 |
| 2.7 kΩ | | 2 'rouge' | 7 'violet' | x100 'rouge' | ±5% 135Ω 'or' | 9 |
| 3 kΩ | | 3 'orange' | 0 'noir' | x100 'rouge' | ±5% 150Ω 'or' | 5 |
| 3.3 kΩ | | 3 'orange' | 3 'orange' | x100 'rouge' | ±5% 165Ω 'or' | 9 |
| 3.9 kΩ | | 3 'orange' | 9 'blanc' | x100 'rouge' | ±5% 195Ω 'or' | 5 |
| 4.7 kΩ | | 4 'jaune' | 7 'violet' | x100 'rouge' | ±5% 235Ω 'or' | 6 |
| 5.1 kΩ | | 5 'vert' | 1 'marron' | x100 'rouge' | ±5% 255Ω 'or' | 5 |
| 5.6 kΩ | | 5 'vert' | 6 'bleu' | x100 'rouge' | ±5% 280Ω 'or' | 5 |
| 6.8 kΩ | | 6 'bleu' | 8 'gris' | x100 'rouge' | ±5% 340Ω 'or' | 5 |
| 8.2 kΩ | | 8 'gris' | 2 'rouge' | x100 'rouge' | ±5% 410Ω 'or' | 10 |
| 10 kΩ | | 1 'marron' | 0 'noir' | x1000 'orange' | ±5% 500Ω 'or' | 26 |
| 12 kΩ | | 1 'marron' | 2 'rouge' | x1000 'orange' | ±5% 600Ω 'or' | 5 |
| 15 kΩ | | 1 'marron' | 5 'vert' | x1000 'orange' | ±5% 750Ω 'or' | 10 |
| 17 kΩ | | 1 'marron' | 7 'violet' | x1000 'orange' | ±5% 850Ω 'or' | 5 |
| 22 kΩ | | 2 'rouge' | 2 'rouge' | x1000 'orange' | ±5% 1100Ω 'or' | 10 |
| 27 kΩ | | 2 'rouge' | 7 'violet' | x1000 'orange' | ±5% 1350Ω 'or' | 5 |
| 33 kΩ | | 3 'orange' | 3 'orange' | x1000 'orange' | ±5% 1650Ω 'or' | 5 |
| 39 kΩ | | 3 'orange' | 9 'blanc' | x1000 'orange' | ±5% 1950Ω 'or' | 5 |
| 47 kΩ | | 4 'jaune' | 7 'violet' | x1000 'orange' | ±5% 2350Ω 'or' | 10 |
| 51 kΩ | | 5 'vert' | 1 'marron' | x1000 'orange' | ±5% 2550Ω 'or' | 5 |
| 56 kΩ | | 5 'vert' | 6 'bleu' | x1000 'orange' | ±5% 2800Ω 'or' | 5 |
| 68 kΩ | | 6 'bleu' | 8 'gris' | x1000 'orange' | ±5% 3400Ω 'or' | 5 |
| 72 kΩ | | 7 'violet' | 2 'rouge' | x1000 'orange' | ±5% 3600Ω 'or' | 5 |
| 100 kΩ | | 1 'marron' | 0 'noir' | x10000 'jaune' | ±5% 5000Ω 'or' | 29 |
| 120 kΩ | | 1 'marron' | 2 'rouge' | x10000 'jaune' | ±5% 6000Ω 'or' | 5 |
| 150 kΩ | | 1 'marron' | 5 'vert' | x10000 'jaune' | ±5% 7500Ω 'or' | 5 |
| 170 kΩ | | 1 'marron' | 7 'violet' | x10000 'jaune' | ±5% 8500Ω 'or' | 5 |
| 220 kΩ | | 2 'rouge' | 2 'rouge' | x10000 'jaune' | ±5% 11000Ω 'or' | 10 |
| 270 kΩ | | 2 'rouge' | 7 'violet' | x10000 'jaune' | ±5% 13500Ω 'or' | 5 |
| 330 kΩ | | 3 'orange' | 3 'orange' | x10000 'jaune' | ±5% 16500Ω 'or' | 5 |
| 470 kΩ | | 4 'jaune' | 7 'violet' | x10000 'jaune' | ±5% 23500Ω 'or' | 10 |
| 1 MΩ | | 1 'marron' | 0 'noir' | x100000 'vert' | ±5% 50000Ω 'or' | 9 |
| 1.5 MΩ | | 1 'marron' | 5 'vert' | x100000 'vert' | ±5% 75000Ω 'or' | 5 |
| 2.2 MΩ | | 2 'rouge' | 2 'rouge' | x100000 'vert' | ±5% 110000Ω 'or' | 5 |
| 3.3 MΩ | | 3 'orange' | 3 'orange' | x100000 'vert' | ±5% 165000Ω 'or' | 5 |
| 4.7 MΩ | | 4 'jaune' | 7 'violet' | x100000 'vert' | ±5% 235000Ω 'or' | 5 |
| 10 MΩ | | 1 'marron' | 0 'noir' | x1000000 'bleu' | ±5% 500000Ω 'or' | 10 |