Rheostat 8” (100 ohm 1.6A) Manufacturer,Supplier and Exporter in India
Product Code : SCL-EAE-11189
The Rheostat 8” (100 ohm 1.6A) serves as a core electrical training instrument in school science laboratories, universities, and commercial test environments. Built with a robust porcelain insulation tube, it features low-temperature-coefficient resistance wire wrapped tightly to ensure linear resistance variation. The slider mechanism utilizes a self-lubricating phosphor bronze contact brush that glides smoothly over the wire winding, minimizing physical wear while preserving electrical continuity.
This high-grade laboratory component is structurally mounted on heavy-duty molded end supports to prevent accidental tipping or operational movement during active bench testing. By acting as either a two-terminal variable resistor or a three-terminal voltage divider, this device integrates seamlessly into standard electrical configurations, offering excellent thermodynamic stability under prolonged workloads.
Key Features
- Optimized Resistance Control: Provides a continuous maximum resistance rating of 100 ohms with a maximum current capacity of 1.6 amperes.
- High Thermal Capacity: Engineered with a non-porous ceramic insulating cylinder to dissipate generated heat efficiently during extended operations.
- Durable Wire Winding: Utilizes oxidized wire alloy to achieve stable electrical performance and prevent short-circuiting between adjacent coils.
- Smooth Slider Adjustment: Equipped with a spring-loaded phosphor bronze slider brush mounted on a guide rod for micro-level adjustment.
- Universal Connectivity: Includes three fully insulated, 4mm heavy-duty binding posts to allow safe connection as a rheostat or a potentiometer.
Technical Specifications
| Specification | Detail |
|---|---|
| Product Name | Rheostat 8” (100 ohm 1.6A) |
| Brand | Lab Exports |
| Maximum Resistance | 100 $\Omega$ |
| Maximum Current Capacity | 1.6 A |
| Tube Length Dimensions | 8 inches (Approx. 200 mm) |
| Insulation Core Material | Vitreous Enameled / Porcelain Ceramic Tube |
| Terminals | 3 Insulated 4mm Binding Post Terminals |
| Mounting Frame | Molded Insulated End Support Brackets |
What's Included in the Kit
- One 8-inch wound porcelain tube rheostat
- Phosphor bronze slider mechanism assembly
- Three integrated safety binding terminals
- Two supportive end feet brackets
Applications / Uses
- Demonstrating Ohm's Law and verifying Kirchhoff's circuit rules in high school physics labs.
- Configuring adjustable voltage dividers to supply variable potential differences to load circuits.
- Regulating direct current (DC) motor speeds and adjusting light bulb intensity in educational setups.
- Serving as a reliable dummy load within basic electrical testing benches and engineering training labs.
How to Use the Rheostat 8” (100 ohm 1.6A)
Follow these operational guidelines to configure and adjust resistance levels safely:
- Verify the power source is deactivated before integrating the variable resistor into the circuit matrix.
- For current regulation (rheostat setup), connect one wire to a bottom terminal and the second wire to the top slider terminal.
- For potential division (potentiometer setup), link the main voltage source across both lower end terminals, and connect the output line to the top slider rod terminal.
- Set the slider to the maximum resistance configuration before activating the main electrical circuit.
- Slowly move the slider block along the guide rod to adjust the current or voltage until the desired circuit parameters are obtained.
Safety Note: Do not exceed the maximum current rating of 1.6 amperes. The resistor coils generate heat during operation; avoid touching the wound porcelain tube until it cools down completely.
Care & Maintenance
- Periodically clean the chrome-plated slider rod and wire track using a dry cloth to clear dust buildup and maintain smooth contact.
- Store the apparatus in a dry storage cabinet to eliminate the risk of atmospheric oxidation on exposed terminal elements.
- Avoid dropping or subjecting the instrument to impact forces that could fracture the ceramic insulation cylinder.
Why Choose Lab Exports
Lab Exports is a premium manufacturer and international exporter of high-quality scientific laboratory instruments, educational lab experiment setups, and academic STEM models. Our production units use top-tier materials to maintain strict structural tolerances, delivering durable equipment built for rigorous classroom and training lab environments. With years of logistics and export experience, we supply reliable educational apparatus to institutions across the globe quickly and efficiently.
Frequently Asked Questions
What is a Rheostat 8” (100 ohm 1.6A) used for?
It is used to manually vary electrical resistance and regulate current or voltage levels in educational physics labs and electronic testing setups.
What material is it made of?
It is manufactured using an insulated porcelain tube core wrapped in an oxidized wire alloy, supported by a metallic slider rod and molded end brackets.
Can it be used as a potentiometer?
Yes, by using all three available binding post terminals, you can configure it as a potentiometer to function as a variable voltage divider.
Is it suitable for school laboratories?
Yes, this apparatus is specifically designed to meet the curriculum demands of school science classrooms and engineering institutes due to its robust safety and durability features.
What happens if the current exceeds 1.6 amperes?
Exceeding 1.6A will cause excessive thermal buildup, which can degrade the wire insulation or melt the internal resistive elements.
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