Question: Design a dual - purpose circuit using an NPN Bipolar Junction Transistor ( BJT ) that operates in two modes: 1 . Switching Mode: The

Design a dual-purpose circuit using an NPN Bipolar Junction Transistor (BJT) that operates in two modes: 1. Switching Mode: The transistor acts as a switch to control a high-current load (e.g., a motor) with an input control signal. 2. Amplification Mode: When the transistor is not switching, it amplifies an AC signal with specific gain and bandwidth requirements.

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