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ETB-129 – Study of Direct Coupled Amplifier and its Frequency Response with Power Supply is a laboratory training system designed to explore the operation and behavior of a direct coupled (DC) amplifier. Unlike capacitive or transformer-coupled amplifiers, a direct coupled amplifier transmits both AC and DC components, making it useful in low-frequency and biomedical applications. This trainer allows students to analyze the voltage gain, DC operating point, and especially the frequency response of direct coupled stages. It comes with a built-in regulated power supply, test points for voltage measurement, and terminals for external signal input and output monitoring via an oscilloscope. Key Features:
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