Differential half circuit bjt — Free Electronics Illustration

Electronics

Differential half circuit bjt

Simplified small-signal half-circuit of a differential amplifier using a single NPN transistor branch extracted from a symmetric pair. The base is driven by one small input representing half the differential input, the emitter is connected to an AC ground reference or through the half-circuit tail resistance, and the collector connects upward through a load resistor toward the supply side. The output is taken at the collector. Drawn as compact black textbook schematic line art on white, with the clipped or truncated layout making clear that it is one half of a larger symmetric differential pair.

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