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COMMON

EMITTERAMPLIFIER

Presented by:

Yahweh Daisog

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GOOD

MORNING

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Common Emitter

AmplifyAmplifier CE amplifiers exhibit high voltage gain and high current gain

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Analysing a Common Emitter Amplifier

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DC Analysis

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AC Equivalent Circuit

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Signal (AC) Voltage at the Base

In finding Vb in the given figure, we will use

Voltage DividerBUT. Before to do that, we should first find

the Total Input Resistance in determining the actualsignal voltage at the base.

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Example Problem

From the previous amplifier, find the signal voltage at

the base of the transistor with a 10mV rms and 300.

FORMULAS:

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Over all Voltage Gain

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