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Decade Boxes | Decade Resistance Boxes

What are Decade Boxes?

Decode boxes are measuring instruments that make use of a sequence of resistors, capacitors, and inductors to simulate several electrical values since they can be quickly and handily distributed into a circuit and replace any basic value component. They are useful for determining the best value for circuit operation since they may be set to almost any resistance, capacitance, or inductance. They are excellent for both troubleshooting and confirming the accuracy of test equipment before usage.

How do they work?

These boxes are inactive equipment, commonly referred to as passive devices, which consist of switches in the form of a series of resistors, capacitors, and inductors. They consist of different values arranged to form decades. Decades are designed by many factors of ten. For instance, a resistance decade box can contain 5-ohm, 2-ohms, and two 10-ohm resistors. A 500 ohm, a 200 ohm, and two 100-ohm resistors might be found in the third decade. This combination enables the three-decade box to be switched in 1-ohm steps between 1 and 999 ohms. To allow for extremely broad ranges and highly exact values, some of these boxes may have six or more decades.

They are distinguished by their accuracy, range, and highest possible resolution. Setting a decade box to the required value and connecting an input device, such as a transmitter, controller, multimeter, etc., are the steps involved in using a decade box for testing. The decade box's set value must be the same as the input device's display value.

New Items

New items

RM6-N, Cropico

Calibration/ Substitution, 6 Decade Euro Style Resistance Box Compact, durable case manufactured from high impact polystyrene, with metal film resistors and silver plated brass contact switches. Particularly suitable for use in electrical and electronic industrial laboratories. Required resistance selected by the rotary switches.

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TEK905, Martindale

High Range Capacitance Box Martindale TEK905 5-decade box for general laboratory, industrial and educational use. Required capacitance set by rotary switches. Capacitance range 100 pF to 4.111μF in 100 pF steps Residual capacitance 30 pF Accuracy ±5% Connection 4mm terminal posts Max. operating voltage 63V r.m.s. (50 Hz) 100V d.c.

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P03197525A, Chauvin Arnoux

The Chauvin Arnoux decade resistance box has a red terminal and two black terminals. It has 1 to 10kΩ resistance range, 250V maximum voltage and 25mA maximum current. It has operating temperature range from -10°C to + 55°C

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1071, Time Electronics

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RM6, Cropico

Calibration/Substitution, 6 Decade Rotary Resistance Box A compact and ruggedly constructed 6 decade resistance box. Ideal for general-purpose resistance simulation or substitution in industrial or educational environments. The product has been designed for easy customer servicing, all of the resistors being replaceable by standard metal film resistors. Refer to the Resistors/Potentiometers section.

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1071, Time Electronic

1071 7 Decade Capacitance Box Many applications in industry and education. Connection by 4mm binding posts and a third terminal is provided to enable the case to be earthed or connected to either output. High stability capacitors used throughout. 10pF to 100uF In-line reading with colour coded digits Bi-polar working Compact 110 x 75 x 200mm Range Type Accuracy at 1kHz Max Voltage Temp Coefficient Power Factor at 1kHz Insulation Resistance 9 x 10pF Silver Mica 1% ± 7pF 300V dc 200V ac 200ppm/°C max 0.0025 >50G Ω 9 x 100pF Silver Mica 1% ± 7pF 300V dc 200V ac 200ppm/°C max 0.0015 >50G Ω 9 x 1nF Silver Mica 1% 300V dc 200V ac 50ppm/°C max 0.0006 >50G Ω 9 x 10nF Silver Mica 1% 160V dc 90V ac 50ppm/°C max 0.0006 >30G Ω 9 x 100nF PP 1% 160V dc 90V ac -250ppm/°C max 0.0006 >30G Ω 9 x 1uF PP 1% 160V dc 90V ac -250ppm/°C max 0.0006 >30G Ω 9 x 10uF Polyester 5% 63V dc 40V ac 500ppm/°C max 0.01 >30G Ω

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9026, Time Electronics

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RM6-N2, Cropico

Calibration/Substitution, Compact 6 Decade Resistance Box Compact, durable case manufactured from high impact polystyrene Metal film resistors and silver plated brass contact switches Particularly suitable for use in electrical and electronic industrial laboratories Required resistance selected by the 6 rotary switches An additional 1KΩ resistor is available at the terminals, enabling the user to make a simple divider

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1041, Time Electronic

Time Electronics Model 1041 Low Ohm Decade Resistance Box Time Electronics 1041 is a precision low ohm resistance box designed for general laboratory work, including platinum resistance thermometry. The 1041 is compact and durable. It is housed in a robust metal case with removable protective rubber cover which facilitates use not only in the laboratory but also in the field. Excellent accuracy is achieved through using high stability metal film resistors. The 5-digit thumbwheel switch enables simple and precise setting with a clear indication of the resistance value. Range/resolution 0 - 1kΩ / 0.01 Ω steps High accuracy Clear visual indication, using colour-coded digits High stability Low temperature coefficient 50 ppm/°C Safety terminals (compatible with 4mm shrouded plugs, standard plugs, bare wires, spade terminals) Residual resistance Power Rating 1W per resistor Voltage Rating: Maximum 100 V DC/AC RMS Suitable for PRT/RTD Removable protective cover Dimensions 215(W) x 100(H) x 120(D) mm Weight 1kg

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1051, Time Electronics

Calibration/ Substitution, 8 Decade-Thumb Wheel Resistance Boxes For simulating resistance transducers and for laboratory, industrial and educational use. Required resistance is set by clearly marked thumbwheel switches, colour coded to aid identification.

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P03197523A, Chauvin Arnoux

The Chauvin Arnoux resistance decade box has range from 10 to 100Ω. It has 72 x 72 x 90mm dimensions. This combination of a set of boxes, both mechanically and electrically, to obtain, for instance, a Wheatstone bridge. This box is fitted with 4mm diameter safety plugs for output connections. It is shipped with a EN 61010-2-031 safety cord operating safety is met through the compliance to the EN 61010-1 standard. 0.5% accuracy

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RBB6-B, Cropico

Calibration/Substitution, High Accuracy 6 Decade Resistance Box Compact, durable case of encapsulated moulded epoxy Constructed using low temperature coefficient resistor wire and gold plated contact switches Particularly suitable for use in electrical and electronic industrial laboratories Required resistance selected by the 6 rotary switches The -B and -C models are suitable for pt100 simulation

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