Uploaded June 2025 | Updated September 2026, 3 weeks ago

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*In this video, the BJT Cascode Amplifier is explained in detail. The video explains what is Cascode Amplifier, why it is used, and how it provides the high voltage gain and high output impedance (explained using small signal analysis).*

The following topics are covered in the video:
0:00 Introduction
0:41 Why common emitter amplifier provides the limited gain
8:08 BJT- Cascode Amplifier
9:31 Output Impedance of BJT Cascode Amplifier (small signal analysis)
18:09 Voltage Gain of BJT Cascode Amplifier (small signal analysis)
27:44 BJT Cascode Amplifier with different loads
30:59 BJT Cascode Amplifier with Cascode Current Source

*For more information, check the following playlist on BJT:*
youtube.com/playlist?list=PLwjK_iyK4LLDoFG8FeiKAr3IStRkPSxqq&si=lGcWcfjtw93RKrgl

*For more videos on Analog Electronics, check this playlist:*
youtube.com/playlist?list=PLwjK_iyK4LLBVM18VZ7JKW-q88FAtnr8_&si=cTh6XSE_wnYWOB1M

*What is Cascode Amplifier?*
_The BJT Cascode Amplifier is the combination of the Common Emitter and the Common Collector stages._
_In this configuration, the input is applied to the Common Emitter Stage and the output of the Common Emitter Stage is fed to the Common Collector stage._

_The cascode amplifier provides high voltage gain and high output impedance._

_In this video, what is Cascode Amplifier, and the small-signal analysis of the Cascode Amplifier is explained in detail. Using the small-signal analysis, the expression of output impedance and the intrinsic gain of the Cascode Amplifier is found._

_At the later part of the video, the effect of load on the voltage gain of the cascode amplifier is explained by taking the example of the passive-resistive load, the active PNP current source as a load, and the cascode current source as a load._

_This video will be helpful to all the students of science and engineering in understanding what is cascode amplifier, why it is used, and how to design it using BJT._

#ALLABOUTELECTRONICS
#bjt
#cascodeamplifier
#analogelectronics

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