Where does the energy necessary to create the larger, amplified signal fundamentally originate?

Answer

The circuit's main power source

Transistors do not generate energy; they modulate the available power drawn from an external DC supply, such as a battery or wall adapter, controlling how much of that source current passes through the output path.

Where does the energy necessary to create the larger, amplified signal fundamentally originate?

#Videos

How Transistor works as an Amplifier - YouTube

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