The ETB-218 is a dedicated trainer unit for studying the Instrumentation Amplifier configuration—commonly used in precision analog signal processing, sensor signal amplification, and biomedical instrumentation. Designed for electronics and communication engineering labs, this unit demonstrates how small differential voltages can be accurately amplified while rejecting common-mode noise.

It features a complete instrumentation amplifier circuit using high-precision operational amplifiers (e.g., OP07, LM324, or equivalent) along with a built-in regulated dual power supply, test points, and provision for connecting external input signals. It also allows students to adjust gain and observe the output on a CRO or voltmeter for practical analysis.

Key Features:

• Pre-assembled Instrumentation Amplifier circuit

• High CMRR for differential signal amplification

• Onboard provision for gain adjustment

• Built-in ±12V regulated power supply

• Input terminals for external differential signal application

• Clearly marked test points for signal observation

• Ideal for signal conditioning and transducer interfacing studies

Educational Applications:

• Understanding of differential signal amplification

• Demonstration of high-input impedance characteristics

• Noise rejection and sensor signal conditioning

• Foundational study for medical and industrial instrumentation systems