Technology in audio

Technology in audio

 THE MOST POPULAR CONFIGURATION - COMMON EMITTER MODE

Common emitter mode has

High input impedance

High current gain

High power gain

Amplifier - amplifies electrical signal

Passive components - R, L AND C, transformer

Active components - diode, transistor

In amplifier - passive components fix operating point (dc level) and couple the various stages.

Important parameters of an amplifier:

Input impedance

Output impedance

Current gain

Voltage gain

Power gain

A good amplifier has

High input impedance

Low output impedance

High current gain

High power gain.