Comparison of Common Base, Common Emitter and Common Collector in tamil

Comparison of Common Base, Common Emitter and Common Collector.
Transistor Common Emitter Amplifier.
The common emitter transistor amplifier circuit is one of the mainstay circuits for use within electronic circuit design offering many advantages.
The common emitter circuit configuration is used in many areas of electronic circuit design: as an audio amplifier, as a basic switch for logic circuits, as a general analogue amplifier and in many other applications.
The common emitter circuit configuration provides voltage gain combined with a moderate current gain, as well as a medium input and a medium output impedance. As such the common emitter configuration is a good all round circuit for use in many applications.
It is also worth noting at this stage that the common emitter transistor amplifier inverts the signal at the input. Therefore if a waveform that is rising enters the input of the common emitter amplifier, it will cause the output voltage to fall. In other words it has a 180° phase change across the circuit.
Dependent upon the actual electronic circuit design itself, the common emitter does not use too many electronic components, sometimes as few as two resistors, although if the bias needs setting for analogue circuits, then four resistors and three capacitors may be used.
Common emitter transistor amplifier basics
Of the three types of transistor configuration used in electronic circuit design, the common emitter is the most widely used because of its key attributes.
The common emitter amplifier has the signal applied to the base and the output is then taken from the collector circuit. However, as the name of this circuit implies, the key attribute is that the emitter circuit is common to both input and output.
The common emitter configuration is equally applicable to both NPN transistor and PNP transistor variants. That said the NPN variety is more commonly used because of the more widespread us of NPN transistors.
Common emitter transistor amplifier characteristics summary
When selecting the transistor configuration to be used within an electronic circuit design, it is necessary to consider the various attributes of the three types: common emitter, common collector and common base, and select the one that is most appropriate.
The table below gives a summary of the major characteristics of the common emitter transistor configuration.
Common emitter amplifier impedance levels
One of the key attributes to be considered when undertaking any electronic circuit design are the impedance levels.
The input impedance is typically around 1kΩ, although this can vary considerably according to the circuit values and conditions. The low input impedance results from the fact that the input is applied across the base and emitter where there is a forward-biased junction,
Also the output impedance can be relatively high. Again this varies considerably upon the electronic component values chosen and current levels permitted. The output impedance may be as high as 10kΩ or possibly more. However if current drain allows higher current levels to be drawn, the output impedance can be reduced considerably. The level of resistance or impedance comes from the fact that the output is taken from the collector where there is a reverse-biased junction.
Common emitter transistor amplifier gain
Another important factor to be considered at the outset of the electronic circuit design is the gain level that can be achieved. There are two forms of gain that can be determined: current gain and voltage gain.
The current gain for the common emitter amplifier circuit is denoted by the Greek symbol β. This is the ratio of collector current to base current. This may be thought of as the ratio of output current to input current. To gain an accurate figure of the gain for a signal, the current gain for small input changes in current is often used. Using this the current gain, β, and the changes in input and output current are relate
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[@nandhug3156]

Sir common base configuration la phase shift 180 nu sollierunthinga. But comparison la CB ku no phase shift sollirukinga... Pls clarify me sir..

[@littleprincess250]

yes same doubt

[@shannitesh9804]

Sir I have a doubt how you are saying that input current high and low, input voltage high and low?? Please explain sir!

[@madeshbabu5463]

Sir CB la voltage gain high ah irukum nu sonninga sir but comparison la low va iruku nu solringa sir ?

[@vigneshkumarbe8258]

Good morning sir, your lectures are very useful and lucid giving great conceptual clarity i have one clrification sir
in cb configuration you are saying that phase shift is 180 but in comparision the phase shift is nill kindly clarify it sir..

[@stalloneg4673]

Same doubt

[@unnimax7604]

Super class sir

[@eduphymath6581]

Sir pls JFET MOSFET video qk ah podunga

[@eduphymath6581]

இலங்கையிலிருந்து

[@eduphymath6581]

Tnx sir

[@paulraj9647]

Sir common base phase shift 180degree sir but you will teach no phase shift in CB

[@ven_kat_esh_0999]

Next video

[@mdf1259]

Enaku antha
Rin and Rout concept konja puriala
Sir
Can you explain in comment please?

[@mohanmohan5845]

Rin ku o/p voltage ah constant ah vachutu i/p ah vary pananum. Rout ku i/p current ah constant ah vachutu o/p ah vary pananum

[@mdf1259]

@@mohanmohan5845
Output la high impedence i mean resistance high aa iruntha
Epadi voltage adigama kidaikum?

[@iamharisan1542]

@@mdf1259 simple apply ohms law v=ir voltge is directly propotional to r not inversely propotional to r so resistance higha erundalum voltage higha erukum for example consider a water tape open and u hold the tap with hands and here moving water is current , pressure is u holding with ur hand is voltage and resistance is ur hand. while tap is open u will feel pressure is high and flow of water resisting by ur hand is high .. only current here water is resistricted .