A.S. International

An FET Characteristics Apparatus is used in electronics labs to study how Field-Effect Transistors (FETs) work by plotting their characteristic curves, mainly the Drain (Output) and Transfer Characteristics, using built-in variable DC power supplies, voltmeters, and ammeters to measure how Drain Current (IDcap I sub cap D𝐼𝐷) changes with Drain-Source Voltage (VDScap V sub cap D cap S end-sub𝑉𝐷𝑆) and Gate-Source Voltage (VGScap V sub cap G cap S end-sub𝑉𝐺𝑆). It helps visualize regions like ohmic, saturation (constant current), and pinch-off, crucial for understanding FETs as amplifiers, switches, and in integrated circuits. 

The copper rod, measuring 15 cm in length and 0.4 cm in diameter, is a highly versatile and reliable component commonly used in a wide array of scientific, educational, and industrial applications. Manufactured from high-purity copper, this rod boasts excellent thermal and electrical conductivity, making it an essential element in experiments and demonstrations involving heat and electricity. Its uniform cylindrical shape and precise dimensions ensure consistent performance in controlled environments, such as physics and chemistry laboratories, as well as in electrical engineering settings.
Known for its outstanding conductive properties, copper is one of the most preferred materials when it comes to demonstrating principles of conductivity, resistance, and thermal transfer. This copper rod is ideally suited for experiments that require rapid transmission of heat or electricity, allowing students and professionals to observe and measure changes with high accuracy. Whether used to build simple circuits or incorporated into calorimetry setups, its responsiveness and durability make it a dependable teaching tool for both foundational and advanced scientific concepts.
The rod's compact size—15 cm in length and 0.4 cm in diameter—makes it especially suitable for use in confined laboratory spaces, small-scale apparatus setups, or portable educational kits. It can easily be handled, measured, and integrated into experimental assemblies without the need for specialized tools. The smooth finish enhances ease of use and ensures safe handling, minimizing the risk of injury or contamination. Furthermore, its corrosion-resistant surface maintains its appearance and functionality over extended periods, even when subjected to repeated experimental use.
In thermal experiments, the copper rod can be utilized to study the conduction of heat along a metal bar, often paired with wax or thermochromic materials to visually demonstrate temperature gradients. The metal’s high thermal conductivity allows for rapid heat transfer, making it an excellent candidate for comparative studies with rods of other materials like aluminum or steel. This visual and quantitative approach to learning about thermal conduction is both engaging and informative, especially in educational environments focused on interactive STEM learning.
For electrical demonstrations, the copper rod’s low resistivity ensures minimal energy loss, making it perfect for constructing simple circuits, grounding systems, or even as electrodes in electrolysis processes. The rod provides a clear, hands-on representation of copper’s role in modern electrical systems, from wiring to power transmission, reinforcing its importance in both scientific study and real-world applications.
The robustness of the copper rod also lends itself well to structural and mechanical applications in classroom settings. It is frequently used in combination with clamps, connectors, and bases to create rigid frameworks or test mechanical properties like malleability and tensile strength. Its ability to withstand repeated bending and minor mechanical stress without cracking adds to its appeal as a durable educational resource.
In conclusion, the 15 cm long, 0.4 cm diameter copper rod is an indispensable tool for educators, students, and professionals who require a dependable, high-performance material for scientific exploration. Its exceptional conductivity, corrosion resistance, and ease of integration into various experimental setups make it a valuable asset across multiple disciplines. Whether employed for thermal transfer, electrical conductivity, or material strength investigations, this copper rod delivers consistent results and enhances the quality of hands-on learning and research.

A horse shoe magnet is a classic and essential educational tool used widely in physics laboratories, schools, and research environments to demonstrate the fundamental properties of magnetism. Recognized for its distinctive U-shaped design, the horse shoe magnet is specifically engineered to concentrate magnetic force at its two poles, creating a stronger and more focused magnetic field compared to bar magnets or other shapes. This makes it particularly effective for demonstrating key principles such as attraction, repulsion, magnetic fields, and the interaction between magnets and various materials. Its unique structure allows it to lift heavier objects than magnets of similar size and composition, which makes it both a practical and highly visual teaching aid. By bringing theoretical concepts into real-world applications, the horse shoe magnet helps students develop a clearer and more tangible understanding of physics.
Manufactured using high-quality magnetic materials, the horse shoe magnet is durable, reliable, and capable of retaining its magnetic strength over time, making it a cost-effective resource for long-term use in educational settings. Its robust construction allows it to withstand frequent handling and repeated demonstrations, ensuring consistency in learning outcomes. The magnet is typically painted or coated to protect against wear and corrosion, extending its lifespan and maintaining its usability in busy laboratory environments. Its compact and ergonomic shape also makes it easy to handle for both teachers and students, encouraging hands-on engagement during lessons.
In the classroom, a horse shoe magnet serves as a versatile tool for a wide range of experiments and demonstrations. It is commonly used to show the effects of magnetic forces on different metals, to map magnetic field lines with the help of iron filings, and to explore the concept of polarity. Its strong and concentrated field makes it especially useful in illustrating how magnetic strength varies with distance, as well as how magnets interact with other magnetic and non-magnetic substances. Teachers often use horse shoe magnets in combination with other lab equipment to demonstrate the principles of electromagnetism, induction, and the relationship between magnetism and electricity, helping learners connect abstract scientific theories to practical applications.
Beyond basic physics experiments, the horse shoe magnet also plays a vital role in introducing students to real-world technological applications of magnetism. By experimenting with this tool, learners can explore how magnets are used in devices such as motors, generators, sensors, and magnetic locks, bridging the gap between classroom learning and industrial innovation. Its capacity to visibly attract and hold metallic objects makes it an engaging and interactive piece of equipment, sparking curiosity and encouraging students to further investigate scientific concepts through exploration and experimentation.
The horse shoe magnet is not only useful in academic contexts but is also an essential accessory for science projects, exhibitions, and hobby-based experimentation. Its iconic shape and powerful functionality make it a staple piece of educational equipment that continues to play a crucial role in teaching magnetism across different levels of study. By incorporating horse shoe magnets into physics labs and classrooms, educators provide students with an engaging and effective way to visualize magnetic forces, fostering deeper comprehension and inspiring interest in science, technology, and engineering fields.

An induction coil demonstration model is a valuable educational tool designed to help students and trainees understand the fundamental principles of electromagnetic induction, voltage transformation, and high-voltage generation in a safe, controlled environment. This equipment is widely used in physics laboratories, engineering training centers, and technical institutes where practical learning is essential for building strong conceptual foundations. The demonstration model provides a clear visual and functional representation of how coils, magnetic fields, and electrical currents interact, making it easier for learners to observe theoretical concepts in real time. Built with durable materials, the model is engineered for long-term use and frequent classroom handling, ensuring reliability and consistent performance during demonstrations and experiments.
The induction coil demonstration model typically features a primary and secondary coil arrangement that illustrates how alternating or interrupted direct current in the primary winding induces a high voltage in the secondary winding. This setup allows educators to showcase core concepts such as Faraday’s law of electromagnetic induction, mutual inductance, and the relationship between coil turns and voltage output. By activating the model, students can see how energy transfers from one coil to another without direct physical contact, reinforcing the basis of transformers, ignition systems, and numerous modern electrical devices. The equipment offers smooth operation and stable output, enabling instructors to conduct repeated demonstrations without fluctuations or interruptions.
Ideal for physics education, the model often includes a mechanism for interrupting the current, helping generate the rapid changes in magnetic fields needed for induction. This gives learners a firsthand understanding of the role of switching and oscillation in electrical engineering. The visible components ensure that students can observe each step of the process, from the power source feeding the primary circuit to the induced voltage produced in the secondary coil. This level of clarity enhances engagement and supports deeper learning, making the device especially useful in classroom discussions and laboratory experiments focused on electromagnetism.
Safety is an important aspect of the induction coil demonstration model, and its construction typically incorporates insulating materials, stable bases, and protective housings that prevent accidental contact with exposed wiring. The design balances effectiveness and safety, allowing both instructors and students to explore high-voltage principles without unnecessary risk. The device is easy to set up and operate, requiring only basic electrical connections, which makes it convenient for routine classroom use. Its compact structure ensures that it fits comfortably in laboratory settings while still being robust enough to handle continuous academic demonstrations.
This educational apparatus also plays an essential role in bridging theoretical physics with practical applications. Students can connect the principles demonstrated by the induction coil to real-world technologies such as transformers, wireless charging systems, spark coils in engines, and various electrical circuits used in industrial and consumer electronics. By providing a tangible, hands-on learning experience, the induction coil demonstration model helps institutions enhance the quality of their science and engineering education. Its reliable performance, user-friendly design, and ability to visually convey complex electrical concepts make it a valuable addition to any educational equipment collection.

A deflection magnetometer compass is a lab instrument used in physics to measure magnetic fields, compare magnetic moments of magnets, and verify magnetic laws like the inverse square law, primarily by observing the angular deflection of a small magnetic needle caused by an external magnetic source or Earth's magnetic field. Key uses include determining the Earth's horizontal magnetic field (

U-shaped Alnico magnets, also known as horseshoe magnets, are popular for education (demonstrating magnetism), industrial uses (motors, generators, sensors, loudspeakers), and specialized applications like guitar pickups, thanks to their strong, stable magnetic fields and high operating temperatures, though rare earths sometimes surpass them in strength. They excel in converting energy, creating fields, and are key components in various scientific and everyday devices. 

• Function: Sine, Square ,Triangle & TTL Output
• Output Amplitude: 0-20Vpp for sine, triangle 0-15Vpp for square
• typical on x1 mode : 50Ω typical on x0.1 mode
• Frequency Accuracy: 1Hz to 200KHz at ±1% FSD 100KHz to 1MHz at ±2% FSD
• DC Offset: ±10V with adjustable to 0
• Output Coupling: DC Coupling

A DIAC (Diode for Alternating Current) is a bidirectional semiconductor switch used primarily to trigger TRIACs in AC power control, featuring symmetrical conduction after exceeding a specific breakover voltage (VBOcap V sub cap B cap O end-sub𝑉𝐵𝑂), and its characteristics (V-I curve showing negative resistance) are studied using an apparatus that applies AC voltage to plot its distinctive "S" or "M" shaped curve, revealing its breakover/holding points for smooth, phase-controlled power regulation in dimmers and motor speed controls. 

Product Detls: Power 5 V DC Usage/Application Laboratory Type Digital Current 1 A- 500 mA Frequency Range 1 Hz, 1 KHz, & 10 KHz Horizontally Common Strips Total 400 Tie Points Vertically Common Strip 7v Logic Input Switches 10 A general purpose experimental board to construct more than 60 experiments of Digital Electronics e.g. Construction & Verification of truth tables of Logic Gates, Boolean Identities and DeMorgan Theorems, Digital Adder & Subtracters, Flip Flops, Counters, Shift Registers, Encoder & Decoders, Multiplexer & De multiplexer etc.Ten LED output indicators & one 7- segment displays are provided, 1 Hz moonshot clock pulse with pulser switch & Clock Generator with selectable using band switch, One DPM (Digital Panel Meter) is mounted on the front panel.

Product Detls: Minimum Order Quantity
1 Piece Material
Mild Steel Is It Portable
Non Portable
Doctor Model General Purpose with 3500-4000 RPM. Fitted with Heavy Duty Motor Speed Control Proportional 5 speed Rotor type fixed or angle Power Supply of 230V 50hz Rotor Capacity 4 Tube/6 Tube/8 Tube (Optional) Power Supply of 230v 50hz Rotor Type Fixed Angle

Newton Ring experiment Microscope