Timestamps for the different topics covered in the video: 0:40 What is Common Base Amplifier 3:37 Small Signal Equivalent Circuit of CB Amplifier 4:52 Voltage Gain of Common Base Amplifier 8:32 Output Impedance of the Common Base Amplifier 9:43 Input Impedance of the Common Base Amplifier 14:06 Common Base Amplifier with Voltage Divider Bias
Dude I was struggling with the small signal analysis....due to your buttery smooth explanation..... it's completely clear to me.....thanks a lot man.....you just made me fall in love with the Analog again......thank you
Thank you for making this video. It helped to refresh the basics. Interesting thing was you didn't follow conventional textbook approach to explain CB. Approach was more from practical point of view. Another possible application of CB amplifier is VCO used for FM transmitter.
I am amazed by the way your videos are made. They are very informative and understandable! Thank you for the videos😁 I would like to know how you draw these circuit diagrams as they are very clear and good. Is there any particular software?
If the coupling capacitor is not present then the DC emitter current will change as soon as the AC signal is applied, as a result, we will not get the desired gain. Another reason could be that the capacitor is used to filter out any dc component present in the AC signal
From the small signal we can find the voltage gain, but isn't BJT mostly used as a current gain device? How do we find the current gain? from regular DC analysis?
What happens if the load resistor is connected to the collector terminal and the source resistor is connected to the emitter terminal in terms of the voltage gain
With the load, in the voltage gain expression, instead of Rc, it will be Rc|| RL. If the source resistance is present then overall gain will be Zin* Av/ ( Zin + Rs).
Timestamps for the different topics covered in the video:
0:40 What is Common Base Amplifier
3:37 Small Signal Equivalent Circuit of CB Amplifier
4:52 Voltage Gain of Common Base Amplifier
8:32 Output Impedance of the Common Base Amplifier
9:43 Input Impedance of the Common Base Amplifier
14:06 Common Base Amplifier with Voltage Divider Bias
Dude you are a legend, Most of colleges & electronic book (except Floyd) were terrible at explaining CB amplifier. But you have nailed it💯
Dude I was struggling with the small signal analysis....due to your buttery smooth explanation..... it's completely clear to me.....thanks a lot man.....you just made me fall in love with the Analog again......thank you
Thank you for making this video. It helped to refresh the basics. Interesting thing was you didn't follow conventional textbook approach to explain CB. Approach was more from practical point of view.
Another possible application of CB amplifier is VCO used for FM transmitter.
Thank you very much. You are a great teacher.
Very informative 👌🏻👌🏻
you truly rock this subject ....loved your lecture and appreciate your effort...thanks
Cleared some of the concepts ,I was struggling with. Thank you
I am amazed by the way your videos are made. They are very informative and understandable! Thank you for the videos😁 I would like to know how you draw these circuit diagrams as they are very clear and good. Is there any particular software?
شرح ممتاز ومفصل بدقة
this video save my life
Very Learning Content !!!!
I think input can have another transistor in common emiter configuration so it can be used to increase power of another common emitter amp on output
Thank you so much sir
what if there was no coupling capacitor between the emitter resistor and the AC input voltage?
If the coupling capacitor is not present then the DC emitter current will change as soon as the AC signal is applied, as a result, we will not get the desired gain. Another reason could be that the capacitor is used to filter out any dc component present in the AC signal
From the small signal we can find the voltage gain, but isn't BJT mostly used as a current gain device? How do we find the current gain? from regular DC analysis?
What happens if the load resistor is connected to the collector terminal and the source resistor is connected to the emitter terminal in terms of the voltage gain
With the load, in the voltage gain expression, instead of Rc, it will be Rc|| RL.
If the source resistance is present then overall gain will be Zin* Av/ ( Zin + Rs).
At 5:26 while finding out Vin,Can i write Vin =( Ie * Re)? if so then the Vin becomes equal and negative to Vout and the gain becomes -1.
Please sir explain this amplifier parameters calculation using h parameter model in presence of hoe parameter.
Sir plz upload rc coupled amplifier and tuned amplifier
Why does tx lines need low input impedance amplifier? Is it to match with tx lines low impedance so no reflection wave occurs?
Yes, correct
Great pls what is gm
gm is transconductance. For more information, check this video: ruclips.net/video/i2t9GTAd2I0/видео.html&si=YGBP3IxyoeLlKpiR
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Can you provide notes on this
Yes, very soon it will be updated in the description
Please refer in fig beside explanation!