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What does an emitter peaking network do?

  • A.Inserts a series resistor at the stage's output
  • B.Bypasses the emitter resistor progressively with frequency
  • C.Adds an inductor in series with the collector load
  • D.Places a capacitor across the collector-base junction

Answer: B

A capacitor across part of the emitter resistor reduces the degeneration as frequency rises, so the gain climbs to offset the falling high-frequency response. It is the emitter-side counterpart of shunt peaking on the collector side. The other options describe shunt peaking, a compensation capacitor and output damping. Compensating a falling response by arranging for the gain to rise is a general technique, and it can be applied at either end of the device.

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