Basic Electrical and Electronics Engineering: Unit III: Analog Electronics
Transistor: Common Collector Configuration (or) Characteristics of a Common Collector
collector terminal is common to both the input and output circuit.
COMMON
COLLECTOR CONFIGURATION (OR) CHARACTERISTICS OF A COMMON COLLECTOR
Figure shows the circuit diagram of common-collector configuration. In this case, collector terminal is common to both the input and output circuit.
Input Characteristics of Common-Collector Configuration
At
a constant collector to emitter voltage (VCE). The plot draw between
the base current (IB) to collector to base voltage (VCB).
It is shown in fig.3.51.
Its
characteristics are quite different from either common base or common emitter
input characteristics. This difference is due to the fact that the input
voltage VCB is largely determined by the level of collector to
emitter voltage VCE.
Output Characteristics of Common Collector Configuration
It
is curve between emitter current IE and collector to emitter voltage
VCE constant base current IB. It is shown in fig.3.52.
IC
is approximately equal to IE the common collector output
characteristics are similar to common emitter output characteristics.
The
current gain in the common collector configuration. Base current IB
is the input current and emitter current IE is the output current.
IE
= IB + IC
IE
= IB + βIB
IE
= (1+ β) IB
IE
/ IB = (Hβ)
Basic Electrical and Electronics Engineering: Unit III: Analog Electronics : Tag: : - Transistor: Common Collector Configuration (or) Characteristics of a Common Collector
Basic Electrical and Electronics Engineering: Unit III: Analog Electronics
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