Article | REF: E310 V1

Amplifiers

Author: Pascal BAREAU

Publication date: November 10, 2001

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1. Main measurable characteristics

1.1 Definitions

Consider an amplifier loaded with an impedance Z u and driven by a generator (E g , Z g ) (figure 1 ).

At low frequencies, the useful quantities are either voltages or currents, so depending on the type of amplifier, the following quantities are defined:

  • voltage gain :

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Main measurable characteristics