What is CE CB CC configuration in BJT?
What is CE CB CC configuration in BJT?
Common Base (CB) Configuration: no current gain but voltage gain. Common Collector (CC) Configuration: current gain but no voltage gain. Common Emitter (CE) Configuration: current gain and voltage gain.
What is difference between CE & CB configurations?
CE amplifier has a high input impedance and lower output impedance than CB amplifier. The voltage gain and power gain are also high in CE amplifier and hence this is mostly used in Audio amplifiers.
What is CB CE and CC?
Common Base (CB), Common Emitter (CE) and Common Collector (CC) used in electronic circuits.
What is the major difference between CE CB and CC?
Comparison between CB, CE, and CC Configuration
| Characteristics | CB | CC |
|---|---|---|
| Output Current | Collector Current or IC | Emitter Current or IE |
| Output Signal Phase | Same phase with input | Same phase with input |
| Current Gain | Always less than Unity α = IC/IE | Very High γ = IE/IB |
| Voltage Gain | About 150 | Less Than Unity |
Why CE configuration is most useful?
The CE configuration is the most widely used configuration and n-p-n transistors are the most commonly used transistors. Common emitter transistors are used most widely, because a common emitter transistor amplifier provides high current gain, high voltage gain and high power gain.
Why power gain in CE configuration is high?
The current gain of a transistor in CE configuration is defined as the ratio of output current or collector current (IC) to the input current or base current (IB). The current gain of a transistor in CE configuration is high. Therefore, the transistor in CE configuration is used for amplifying the current.
What is CE configuration?
The common emitter (CE) configuration is the most widely used transistor configuration. The common emitter (CE) amplifiers are used when large current gain is needed. The input signal is applied between the base and emitter terminals while the output signal is taken between the collector and emitter terminals.
Why there is 180 phase shift in CE amplifier?
The common emitter transistor amplifier is the only configuration that gives an inversion, 180°, between the input and output signals. The reason for this can be seen from the fact that as the input voltage rises, so the current increases through the base circuit.
Why is CE configuration preferred?
Common emitter circuit is preferred over a common base circuit in amplifiers because the resistance of the common emitter circuit is much less than that of the common base circuit. Also the power gain in the common emitter circuit is much higher than that in a common base circuit.
