Operational Amplifier as Voltage & Current Feedback Amplifier

The Operational Amplifier as Voltage & Current Feedback Amplifier from Glass Agencies under the EROSE brand is a comprehensive laboratory apparatus designed to demonstrate the principles, characteristics, and practical applications of voltage and current feedback amplifiers using operational amplifiers. This setup provides students, trainees, and researchers with hands-on experience in understanding how feedback mechanisms influence amplifier performance, including gain, input and output impedance, bandwidth, linearity, and stability. The apparatus includes a carefully assembled circuit with operational amplifiers, resistors, capacitors, and clearly labeled input and output terminals, allowing users to construct and analyze both voltage feedback and current feedback configurations. In the voltage feedback mode, a portion of the output voltage is fed back to the input, affecting the voltage gain, reducing distortion, and improving linearity, which demonstrates the advantages of negative feedback in controlling amplifier behavior. In the current feedback configuration, a portion of the output current is fed back to the input, impacting input and output resistances and bandwidth, providing learners with a practical understanding of feedback topology effects on amplifier characteristics. A regulated power supply ensures stable operation, while built-in protective features prevent damage from overvoltage, overcurrent, or incorrect connections, allowing safe and repeated use in educational and research laboratories. Accessible test points enable observation of input and output signals using oscilloscopes, multimeters, or data acquisition systems, enabling detailed analysis of gain, frequency response, and feedback effects. By varying component values, students can study the influence of feedback on amplifier stability, bandwidth, and signal distortion, gaining practical insights into amplifier design, optimization, and real-world applications. The apparatus is constructed with high-quality components and a robust frame to ensure durability, stability, and long-term usability in classrooms, technical institutes, and laboratory environments. Glass Agencies maintains stringent quality control to ensure accurate performance, operational safety, and reliability. The Operational Amplifier as Voltage & Current Feedback Amplifier apparatus provides an interactive platform for learning amplifier theory, feedback principles, and practical op-amp applications. It is an essential tool for electronics education, experimental learning, and research, making it a valuable addition to laboratories, training centers, and institutions focused on applied analog electronics, circuit design, and signal conditioning.