7 Decade Resistance Box Manufacturer,Supplier and Exporter in India
Product Code : SCL-EAE-11296
The instrument divides its resistance selection across seven decades. Each decade represents a different order of resistance, allowing users to combine selected values and obtain the required total resistance without repeatedly changing individual fixed resistors.
The clearly arranged controls support practical work involving circuit behaviour, resistance substitution and instrument comparison. The exact resistance span, increment, tolerance, resistor rating, switching arrangement and connection terminals depend on the supplied configuration and should be confirmed before procurement.
Key Features
Seven resistance decades: Supports selection across seven orders of resistance in one laboratory instrument.
Additive value selection: Selected decade values combine to produce the total resistance introduced into the circuit.
Rapid circuit adjustment: Users can change resistance without replacing multiple loose resistors.
Clear control layout: Decade markings help students understand place value and resistance multiplication.
Reusable laboratory apparatus: Suitable for repeated supervised experiments and technical demonstrations.
Broad teaching value: Supports electricity, electronics, measurement and circuit-analysis practicals.
Bench-top operation: Designed for convenient use with compatible laboratory leads and test equipment.
Technical Specifications
|
Specification |
Detail |
|
Product name |
7 Decade Resistance Box |
|
Brand |
Lab Exports |
|
Instrument type |
Variable resistance decade box |
|
Number of decades |
7 |
|
Resistance selection principle |
Additive decade selection |
What's Included in the Kit
One 7 Decade Resistance Box
Connecting leads, grounding accessories, operating instructions and calibration documentation should be confirmed when ordering.
Applications and Uses
Substituting known resistance values in test circuits
Studying current, voltage and resistance relationships
Conducting Ohm’s law and Kirchhoff’s law experiments
Testing the response of bridges, meters and electronic circuits
Comparing calculated and measured resistance values
Demonstrating series resistance and place-value addition
Supporting supervised instrument checking and training exercises
How to Use the 7 Decade Resistance Box
Switch off and isolate the circuit before making connections.
Set every decade control to its lowest available value.
Connect the designated resistance terminals to the circuit with suitable leads.
Determine the required resistance before energising the circuit.
Select the required value on each decade control.
Add the selected decade values to verify the total resistance.
Switch on the circuit and observe the connected meter or test equipment.
Switch off the circuit before changing connections or large resistance settings.
Safety note: Do not exceed the permitted voltage, current or power rating of any resistance decade. Excessive loading can overheat or permanently alter the internal resistors. Confirm the model-specific ratings before use.
Care & Maintenance
Keep the controls, terminals and enclosure clean and dry.
Operate switches or dials gently and avoid forcing them between positions.
Store the box away from moisture, excessive heat, dust and mechanical shock.
Check selected values periodically with a suitable calibrated resistance meter when traceable results are required.
Why Choose Lab Exports?
Lab Exports manufactures and exports scientific laboratory instruments, experiment setups, science kits, mathematics kits, didactic models and STEM equipment. Its range supports schools, colleges, universities, vocational institutes and institutional laboratory projects. Product configurations can be reviewed against purchaser specifications before supply. Buyers should state the required resistance range, resolution, tolerance and power rating when requesting a quotation.
Frequently Asked Questions
What is a 7 Decade Resistance Box used for?
It is used to select and substitute known resistance values in electrical circuits for experiments, testing, comparison and training.
What does seven decades mean?
Seven decades means the instrument has seven resistance-selection sections representing successive orders of magnitude. Their selected values are added together to obtain the total resistance.
Can this box replace individual resistors?
It can substitute multiple fixed resistance values within its rated range. It must not be used beyond its stated current or power limits.
Is the 7 Decade Resistance Box suitable for schools?
Yes. It is suitable for supervised physics and electronics practicals involving resistance selection, circuit analysis and electrical measurement.
Can it be used to check a multimeter?
It can provide reference resistance values for instructional comparison. Formal calibration requires a box with verified accuracy and valid calibration documentation.
How is the total resistance calculated?
Multiply each control setting by its marked decade value and add all selected values. Contact and residual resistance may also affect low-resistance measurements.
Product Image ALT Text
7 Decade Resistance Box by Lab Exports for laboratory circuit testing
Seven decade variable resistance box with selection controls
Laboratory resistance substitution box for electronics experiments
Educational decade resistance apparatus for physics laboratories
Request the required range and electrical ratings for this model, or explore related electrical and electronics laboratory equipment, the complete physics lab equipment range and the resistance substitution box from Lab Exports.
