Feedback Amplifier Series & Shunt Voltage

The Feedback Amplifier Series & Shunt Voltage apparatus from Glass Agencies under the EROSE brand is a versatile and educational laboratory instrument designed to demonstrate the principles, characteristics, and practical applications of series and shunt voltage feedback amplifiers. This apparatus provides students, trainees, and researchers with a hands-on understanding of feedback mechanisms in electronic circuits, enabling detailed study of voltage gain, input and output resistance, stability, and distortion reduction. The system is carefully assembled with operational amplifiers, resistors, capacitors, and clearly labeled input and output terminals, allowing users to construct and observe series and shunt feedback configurations with ease. In the series voltage feedback mode, the input is connected in series with the feedback network, which reduces input impedance and improves linearity, providing a clear demonstration of negative feedback effects on amplifier performance. In the shunt voltage feedback mode, the feedback is applied in parallel at the input, affecting input and output characteristics differently, and allowing learners to compare and analyze the influence of various feedback topologies on voltage gain, bandwidth, and distortion. A regulated power supply ensures stable operation, while built-in protective elements prevent damage from overvoltage, overcurrent, or incorrect connections, making it safe for repeated use in educational and research laboratories. Accessible test points enable observation and measurement of input and output signals using oscilloscopes, multimeters, or other standard instruments, helping students understand the practical aspects of feedback application in amplifier design. By varying resistances and input signals, learners can explore the effect of feedback on gain control, frequency response, and amplifier stability, gaining practical insights into circuit optimization and real-world applications. The compact and robust construction ensures long-term durability and stability during experiments, making the apparatus suitable for classroom demonstrations, technical training, and laboratory research. Glass Agencies maintains strict quality control to ensure reliable performance, accuracy, and safety. The Feedback Amplifier Series & Shunt Voltage apparatus provides an interactive and comprehensive platform for studying feedback theory, amplifier design, and practical electronics, making it an essential tool for electronics laboratories, technical institutes, and training centers focused on applied analog circuit education, experimental learning, and practical skill development.