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 Price Decade Box Type 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 Dimensions
RS庫存編號 671-8886
製造零件編號RBB6-B
BrandCropico
HK$10,998.90
單位
Resistance 0.001Ω ±2% ±0.05% - - - - - - 0.33W ±3 ppm/°C, ±5 ppm/°C 80 x 350 x 100mm
RS庫存編號 211-159
製造零件編號RM6-N
BrandCropico
HK$2,654.14
單位
Resistance 10Ω ±1% - 0.1Ω - - - - - - 0.6W ±100ppm/°C 70 x 190 x 140mm
RS庫存編號 382-6451
製造零件編號DR 07
BrandELC
HK$1,566.28
單位
Resistance ±1% - - - - - - - - 0.5W ±50ppm/°C 305 x 96 x 68.5mm
RS庫存編號 610-297
製造零件編號1051
HK$5,847.92
單位
Resistance 0.01Ω ±10% ±0.1% 90mΩ - - - - - - 1W ±100ppm/°C 110 x 200 x 75mm
RS庫存編號 671-8899
製造零件編號RM6-N3
BrandCropico
HK$2,255.33
單位
Resistance 100Ω ±1% - 0.1Ω - - - - - - 0.6W ±100ppm/°C 70 x 190 x 140mm
RS庫存編號 306-9232
製造零件編號DC 05
BrandELC
HK$2,246.87
單位
Capacitance - - - - 100pF ±1% - - - - - ±125ppm/°C 100 x 427 x 72mm
RS庫存編號 816-0172
製造零件編號1041
HK$4,493.67
單位
Resistance 0.01Ω ±10% ±0.1% 60mΩ - - - - - - 1W 50ppm/°C 120 x 215 x 100mm
RS庫存編號 671-8889
製造零件編號RBB6-C
BrandCropico
HK$10,900.64
單位
Resistance 0.01Ω ±1% ±0.05% - - - - - - 0.33W ±3 ppm/°C, ±5 ppm/°C 80 x 350 x 100mm
RS庫存編號 237-195
製造零件編號RBC5-A
BrandCropico
HK$4,610.42
單位
Resistance 0.1Ω ±5% - - - - - - - - 5W ±3 ppm/°C, ±5 ppm/°C 130 x 390 x 105mm
RS庫存編號 306-9210
製造零件編號DL 07
BrandELC
HK$2,296.12
單位
Inductance - - - - - - - 1µH ±5% - - - 100 x 427 x 72mm
RS庫存編號 610-073
製造零件編號RM6
BrandCropico
HK$2,527.61
單位
Resistance 10Ω ±1% - 0.1Ω - - - - - - 0.4W ±100ppm/°C 65 x 287 x 65mm
RS庫存編號 255-581
製造零件編號TEK905
BrandMartindale
HK$2,286.35
單位
Capacitance - - - - 100pF ±5% 30pF - - - - - 306 x 70 x 80mm
RS庫存編號 298-8918
製造零件編號RM6-N2
BrandCropico
HK$2,508.36
單位
Resistance ±1% - 0.1Ω - - - - - - 0.6W ±100ppm/°C 70 x 190 x 140mm
RS庫存編號 205-7654
製造零件編號1053
HK$8,060.27
單位
Inductance - - - 0.2Ω - - - 1mH ±3% 1µH - ±1351ppm/°C 245 x 62 x 100mm
RS庫存編號 816-0163
製造零件編號1061
HK$3,139.41
單位
Resistance ±1% - 150mΩ - - - - - - 0.75W 100ppm/°C 82 x 355 x 63mm
RS庫存編號 382-6439
製造零件編號DR 05
BrandELC
HK$1,215.36
單位
Resistance ±1% - - - - - - - - 0.5W ±50ppm/°C 305 x 96 x 68.5mm
RS庫存編號 671-8895
製造零件編號RBB6-F
BrandCropico
HK$10,895.37
單位
Resistance 10Ω ±0.1% ±0.05% 0.013Ω - - - - - - 0.33W ±3 ppm/°C, ±5 ppm/°C 80 x 350 x 100mm
RS庫存編號 671-8870
製造零件編號RBB5-D
BrandCropico
HK$6,646.57
單位
Resistance ±0.2% ±0.05% 0.012Ω - - - - - - 0.33W ±3 ppm/°C, ±5 ppm/°C 80 x 350 x 100mm
RS庫存編號 306-9226
製造零件編號DR 04
BrandELC
HK$1,062.20
單位
Resistance ±1% - - - - - - - - 0.5W ±50ppm/°C 305 x 96 x 68.5mm
RS庫存編號 537-2619
製造零件編號1071
HK$6,278.82
單位
Capacitance - - - - 10pF ±1% 55pF - - - - ±300ppm/°C 110 x 200 x 75mm