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single stage power amplifier [1 record]

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Record 1 2002-11-13

English

Subject field(s)
  • Amplifiers (Electronics)
CONT

We have to consider what type of gain device is suitable for this application. Actually the choice is simple: Bipolar devices have too low an input impedance to be useable, and tubes have too little gain to be used in a single stage power amplifier. The only usable device is the power Mosfet, which is a transconductance device like the tube, and has a high input impedance, but operates with enough gain at high enough currents to be driven directly by line-level signal.

French

Domaine(s)
  • Amplificateurs (Électronique)

Spanish

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