Decade Boxes

What are Decade Boxes?

Decade boxes are test instruments which use a series of resistors, capacitors, or inductors to replicate different electrical values. They can be quickly and easily substituted into a circuit and replace any standard value component. Their ability to be configured to nearly any resistance, capacitance, or inductance makes decade boxes a convenient way to find the optimum value for circuit operation. They are ideal for verifying the accuracy of test equipment prior to use as well as troubleshooting.

They are known as decade boxes because they have controls that correspond to the digits in a decimal number - a control for the tens position, a control for the hundreds position, and so on.

How they work?
Decade boxes are passive devices that consist of switches and either a series of resistors, capacitors, or inductors of different values arranged to form “decades”. Decades are set up in factors of ten. For example, a resistance decade box may have a 5 ohm, 2 ohm, and two 1 ohm resistors in the first decade. The second decade may have a 50 ohm, a 20 ohm, and two 10 ohm resistors. The third decade may have a 500 ohm, a 200 ohm, and two 100 ohm resistors. With this combination, this three decade box can be switched to any value from 1 ohm to 999 ohms in 1 ohm steps. Some decade boxes may have 6 or more decades to allow for very wide ranges and highly precise values. Decade boxes are characterized by their range, maximum resolution, and accuracy.
Using a decade box for testing consists of setting the box to the desired value and hooking up the input device such as a transmitter, controller, multimeter, etc. The display value of the input device should match the set value of the decade box.
Types of Decade Boxes
• Resistance Decade Boxes – can simulate resistance for testing the accuracy of thermostats, temperature controllers, multimeters, and others.
• Capacitance Decade Boxes – can simulate capacitance for testing the accuracy of multimeters and other instruments that measure capacitance.
• Inductance Decade Boxes - can simulate inductance for testing the accuracy of multimeters and other instruments that directly measure inductance

Applications include
• Field and laboratory work
• Educational establishments
• Design work

Things to Consider When Selecting a Decade Box:
• Is this for simulating resistance, conductance or inductance?
• What range is required?
• How much resolution is needed?
• What level accuracy is preferred?

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Description Prix Decade Box Type Calibrated Resistance Resolution Best Maximum Resistance Accuracy Best Minimum Resistance Accuracy Residual Resistance Capacitance Resolution Best Capacitance Accuracy Residual Capacitance Inductance Resolution Best Inductance Accuracy Residual Inductance Power Rating Temperature Coefficient
Nouveau
N° de stock RS 193-8686
MarqueRS PRO
42,08 €
Each
Unité
Resistance - - 1% - - - - - - - - 0.3W -
N° de stock RS 610-297
Référence fabricant1051
566,87 €
Each
Unité
Resistance - 0.01Ω ±10% ±0.1% 90mΩ - - - - - - 1W ±100ppm/°C
N° de stock RS 203-237
Référence fabricant1051
674,87 €
Each
Unité
Resistance RSCAL 0.01Ω ±10% ±0.1% 90mΩ - - - - - - 1W ±100ppm/°C
N° de stock RS 306-9232
Référence fabricantDC 05
MarqueELC
235,00 €
Each
Unité
Capacitance - - - - - 100pF ±1% - - - - - ±125ppm/°C
N° de stock RS 669-564
Référence fabricant1051
710,87 €
Each
Unité
Resistance UKAS 0.01Ω ±10% ±0.1% 90mΩ - - - - - - 1W ±100ppm/°C
N° de stock RS 203-243
Référence fabricant1040
559,60 €
Each
Unité
Resistance RSCAL ±1% ±0.1% Less than 250mΩ - - - - - - 1W ±50ppm/°C
N° de stock RS 617-692
Référence fabricant1040
560,90 €
Each
Unité
Resistance - ±1% ±0.1% Less than 250mΩ - - - - - - 1W ±50ppm/°C
N° de stock RS 669-586
Référence fabricant1040
595,60 €
Each
Unité
Resistance UKAS ±1% ±0.1% Less than 250mΩ - - - - - - 1W ±50ppm/°C
N° de stock RS 382-6439
Référence fabricantDR 05
MarqueELC
120,00 €
Each
Unité
Resistance - ±1% - - - - - - - - 0.5W ±50ppm/°C
N° de stock RS 382-6451
Référence fabricantDR 07
MarqueELC
155,00 €
Each
Unité
Resistance - ±1% - - - - - - - - 0.5W ±50ppm/°C
N° de stock RS 301-4894
Référence fabricantRM6-N2
MarqueCropico
352,50 €
Each
Unité
Resistance RSCAL ±1% - 0.1Ω - - - - - - 0.6W ±100ppm/°C
N° de stock RS 298-8918
Référence fabricantRM6-N2
MarqueCropico
248,00 €
Each
Unité
Resistance - ±1% - 0.1Ω - - - - - - 0.6W ±100ppm/°C
N° de stock RS 301-4901
Référence fabricantRM6-N2
MarqueCropico
378,00 €
Each
Unité
Resistance UKAS ±1% - 0.1Ω - - - - - - 0.6W ±100ppm/°C
N° de stock RS 911-9948
Référence fabricant1041
565,60 €
Each
Unité
Resistance UKAS 0.01Ω ±10% ±0.1% 60mΩ - - - - - - 1W 50ppm/°C
N° de stock RS 911-9945
Référence fabricant1041
543,60 €
Each
Unité
Resistance RSCAL 0.01Ω ±10% ±0.1% 60mΩ - - - - - - 1W 50ppm/°C
N° de stock RS 816-0172
Référence fabricant1041
435,60 €
Each
Unité
Resistance - 0.01Ω ±10% ±0.1% 60mΩ - - - - - - 1W 50ppm/°C
N° de stock RS 911-9932
Référence fabricantDR08
MarqueELC
278,00 €
Each
Unité
Resistance RSCAL - 3% 1% - - - - - - - 0.5W 100ppm/°C
N° de stock RS 537-7620
Référence fabricant1067
1.188,23 €
Each
Unité
Resistance UKAS 10mΩ ±0.01% - 10mΩ - - - - - - 0.35W ±10 ppm/°C, ±20 ppm/°C
N° de stock RS 792-1412
Référence fabricantRBB5-D
MarqueCropico
1.255,00 €
Each
Unité
Resistance UKAS ±0.2% ±0.05% 0.012Ω - - - - - - 0.33W ±3 ppm/°C, ±5 ppm/°C
N° de stock RS 911-9936
Référence fabricantDR08
MarqueELC
300,00 €
Each
Unité
Resistance UKAS - 3% 1% - - - - - - - 0.5W 100ppm/°C