Rheostat 8” (100ohm 1.6A)
Product Code : SCL-PLE-11735
The StemAids Rheostat (8-inch) is a heavy-duty laboratory instrument engineered for the empirical control of electric current and potential difference. Optimized for Secondary, Technical Vocational (TVET), and University-level physics, this sliding-contact resistor facilitates the quantification of Ohm’s Law and the regulation of circuit loads. Manufactured to ISO 9001:2015 standards, it provides a ruggedized, thermally stable solution for institutional laboratories requiring reliable variable impedance.
Technical Specifications
|
Tender Specification |
OEM Technical Detail |
|
Total Resistance |
100 Ohms (Ω) |
|
Current Carrying Capacity |
1.6 Amperes (A) |
|
Tube Length |
8 Inches (approx. 200mm) |
|
Winding Material |
Oxidized Constantan (Eureka) wire for high-temperature stability |
|
Core Construction |
Vitreous-enameled insulating porcelain/ceramic tube |
|
Slide Mechanism |
Heavy-duty chrome-plated brass rod with spring-loaded slider |
|
Terminals |
3x 4mm color-coded safety binding posts (Enabling Potentiometer use) |
|
ISO Compliance Code |
Manufactured under ISO 9001:2015 Quality Management Systems |
|
HS Code |
8533.21.00 (Fixed/Variable electrical resistors) |
Key Pedagogical Outcomes (Bloom’s Taxonomy Alignment)
- Variable Resistance Interface: Facilitates student visualization of how physical length affects electrical resistance (R∝L), supporting Basic Electricity Module 101.
- Current Regulation Quantification: Enables the physical study of circuit limits, allowing learners to apply the rheostat as a current limiter to protect sensitive components like galvanometers.
- Potential Divider Analysis: Supports the analysis of voltage division by utilizing the three-terminal configuration to create a variable potential source.
- Thermal Management Evaluation: Allows students to evaluate the impact of Joule heating (I2R) on resistor stability during high-current laboratory sessions.
International Logistics & Compliance
StemAids ensures comprehensive OEM readiness for global institutional procurement:
- Packaging: Export-grade seaworthy crating (ISPM-15 compliant) featuring rigid internal bracing to protect the ceramic tube from impact and the slider rod from bending during transit.
- Documentation: Includes Manufacturer’s Authorization Form (MAF), Certificate of Conformance (CoC), and Electrical Safety Guidelines in English.
- Durability: Tropicalized design featuring oxidation-resistant Constantan wire and non-corrosive brass fittings to ensure long-term functionality in high-humidity climates.
Direct OEM Sourcing Advantages
Procuring the StemAids Rheostat (100$\Omega$, 1.6A) directly ensures vertical manufacturing control:
- In-House Precision Winding: Every unit is machine-wound to ensure uniform spacing between turns, preventing localized hot spots and ensuring a linear resistance change.
- Batch-Tested for Uniform Reliability: Every unit undergoes a continuity test across the entire slide length to ensure zero-dropout contact.
- Direct Factory Spares Availability: Guaranteed availability of replacement sliders, ceramic end-supports, and slider rods to maximize long-term laboratory ROI.
- Manufacturing Control: Direct oversight of the porcelain firing process ensures a high-dielectric strength core that can withstand high temperatures without cracking or warping.
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