LED Characteristics Apparatus
Product Code : SCL-PLE-11717
The StemAids LED Characteristics Apparatus is a precision laboratory workstation engineered for the empirical study of Light Emitting Diode (LED) physics and band-gap energy. Optimized for Secondary, Vocational (TVET), and University-level physics, this apparatus facilitates the quantification of the Forward-Biased V-I relationship across multiple wavelengths. Manufactured to ISO 9001:2015 standards, it provides a regulated environment for verifying the Planck’s constant and the "Knee Voltage" of various semiconductor materials within institutional laboratories.
Technical Specifications
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Tender Specification |
OEM Technical Detail |
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Integrated Light Sources |
Multi-LED array (typically Red, Green, Yellow, and Blue) |
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Regulated Power Source |
Variable 0–5V or 0–10V DC with high-resolution control |
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Measurement Interface |
Dual-range Analog or Digital meters for Voltage and Current (μA/mA) |
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Circuit Configuration |
Built-in current-limiting resistors to prevent semiconductor thermal runaway |
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Control Interface |
Precision multi-turn potentiometers for fine voltage adjustment |
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Functional Principle |
p−n Junction Electroluminescence and V-I Characteristics |
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Chassis Construction |
Ruggedized, flame-retardant ABS or powder-coated metallic enclosure |
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ISO Compliance Code |
Manufactured under ISO 9001:2015 Quality Management Systems |
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HS Code |
9023.00.00 (Educational/demonstrational scientific apparatus) |
Key Pedagogical Outcomes (Bloom’s Taxonomy Alignment)
- Optoelectronic Interface: Facilitates student visualization of the relationship between electrical input and photon emission, supporting Solid-State Physics Module 201.
- Knee Voltage Quantification: Enables the physical study of semiconductor junctions, allowing learners to apply measurement techniques to determine the turn-on voltage for different doped materials.
- Band-Gap Energy Analysis: Supports the analysis of the relationship between photon wavelength (color) and the energy required to bridge the forbidden gap.
- Semiconductor Efficiency Evaluation: Allows students to evaluate the non-ohmic nature of LEDs and the necessity of current-limiting protection in circuit design.
International Logistics & Compliance
StemAids ensures comprehensive OEM readiness for global institutional procurement:
- Packaging: Export-grade seaworthy crating (ISPM-15 compliant) featuring anti-static internal stabilization and moisture-barrier protection for sensitive optoelectronic components.
- Documentation: Includes Manufacturer’s Authorization Form (MAF), Certificate of Conformance (CoC), and illustrated Experiment Manuals in English.
- Durability: Tropicalized design featuring high-grade FR-4 PCBs and UV-stable LED housings tested for performance in high-humidity climates (up to 90% RH).
Direct OEM Sourcing Advantages
Procuring the StemAids LED Characteristics Apparatus directly ensures vertical manufacturing control:
- In-House Precision Calibration: Every unit is batch-tested against reference semiconductors to ensure the integrated meters accurately capture the steep V-I curve.
- Batch-Tested for Uniform Reliability: Every unit undergoes a thermal stability test to ensure the variable power supply maintains a constant voltage without drift during data collection.
- Direct Factory Spares Availability: Guaranteed availability of replacement LED modules, potentiometer knobs, and digital display units to maximize long-term laboratory ROI.
- Manufacturing Control: Direct oversight of the internal regulation circuitry ensures low-noise DC output, allowing for the detection of subtle leakage currents in the micro-ampere range.
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