Source follower amplifier — Free Electronics Illustration

Electronics

Source follower amplifier

Simplified black-and-white circuit schematic of a MOSFET common-drain amplifier using a single n-channel MOSFET centered vertically. The drain is connected upward to a positive DC supply rail, the gate receives the input from the left through a coupling capacitor, and the source is taken as the output node below. The source is connected downward through a bias current source or source-bias path, and the output is also shown coupled through a second capacitor to a load resistor. Drawn as clean standard engineering circuit-symbol line art on a white background, compact and clearly recognizable as a one-transistor source follower amplifier.

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