UJT Characteristics Apparatus
Product Code : SCL-PLE-11842
The JLab India UJT Characteristics Apparatus is a precision electronic workstation designed for the empirical study of the Uni-Junction Transistor (UJT). This apparatus allows students to explore the unique "Negative Resistance" region of the UJT, which makes it ideal for relaxation oscillators and timing circuits. It provides a stable environment to quantify the relationship between Emitter current (IE) and Emitter voltage (VE), as well as determining the Intrinsic Standoff Ratio (η).
Technical Specifications
| Tender Specification | OEM Technical Detail |
| Active Device | High-reliability UJT (e.g., 2N2646 or equivalent) |
| Regulated Power Supplies | Dual independent DC sources: VBB (0–15V) and VEE (0–10V) |
| Monitoring | 3 Integrated High-Precision Meters (Emitter Voltmeter, Emitter Ammeter, Base-to-Base Voltmeter) |
| Ammeter Range | 0–50mA (for Emitter current measurement) |
| Voltmeter Ranges | 0–10V (Emitter Voltage) and 0–15V (Inter-base Voltage) |
| Control Interface | Variable potentiometers for adjusting Emitter bias and Inter-base voltage |
| Interface | 4mm safety-shrouded sockets with high-contrast mimic diagram |
Certification | ISO certificates available on request |
| HS Code | 9023.00.00 (Demonstrational scientific apparatus) |
Key Pedagogical Outcomes (Bloom’s Taxonomy Alignment)
- Thyristor-Family Interface: Facilitates student understanding of the double-base diode structure, supporting the curriculum for Power Electronics and Pulse Waveform Generation.
- Characteristic Quantification: Enables the physical plotting of the VEIE curve; learners apply varying voltages to identify the "Peak Point" (VP,IP) and "Valley Point" (VV,IV).
- Negative Resistance Analysis: Supports the analysis of the region where voltage decreases as current increases; students evaluate this phenomenon to understand how UJTs trigger SCRs.
- Parameter Calculation: Allows students to calculate the Intrinsic Standoff Ratio (η) and evaluate the inter-base resistance (RBB) of the device.
International Logistics & Compliance
JLab India ensures comprehensive OEM readiness for global institutional procurement:
- Packaging: Export-grade seaworthy crating (ISPM-15 compliant). The unit is protected by anti-static (ESD) shielding and shock-absorbent foam to ensure the safety of the analog/digital meters during transit.
- Documentation: Includes Manufacturer’s Authorization Form (MAF), Certificate of Conformance (CoC), and a technical manual with standardized experimental procedures.
- Durability: Tropicalized design featuring moisture-proof PCB lacquer and UV-resistant panel labeling for long-term clarity in varying laboratory climates.
Direct OEM Sourcing Advantages
Procuring the JLab India UJT Characteristics Apparatus directly ensures vertical manufacturing control:
- Stable Inter-base Biasing: We utilize high-regulation internal supplies to ensure VBB remains constant while plotting emitter characteristics, ensuring accurate determination of η.
- Component Precision: Direct oversight ensures that the UJTs used are factory-screened for standard parameters, making it easier for students to correlate laboratory results with textbook theory.
- Direct Factory Spares Availability: Guaranteed availability of replacement UJTs, precision potentiometers, and display meters to maximize the long-term ROI.
- Manufacturing Control: Direct oversight of the internal safety limits prevents students from exceeding the maximum power dissipation of the UJT during high-current "Valley Point" measurements.
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