Feedback amplifier — Free Electronics Illustration

Electronics

Feedback amplifier

A simplified closed-loop feedback amplifier shown as a clean block-diagram style schematic. The main amplifier is drawn as a horizontal rectangular gain block with a left input terminal and a right output terminal, using crisp black or dark gray outlines and a light gray or pale blue fill. A clear external feedback path loops from the output side back toward the input side, meeting the forward input at a small summing junction or input summing point. Simple terminal nodes and connection lines are visible. The amplifier may carry a generic label such as 'A', 'A(s)', 'A_f', or 'feedback amplifier', and the feedback path may optionally be labeled with a gain term such as beta or β(s). The overall appearance is a neat technical textbook or engineering clipart diagram emphasizing closed-loop operation.

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