In this video, the Common Base Amplifier is explained in detail. And the expressions of the voltage gain, the input impedance, and the output impedance of this common base (CB)amplifier are also derived during the discussion. By watching this video, you will learn the following topics: 0:00 Introduction 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 Common Base Amplifier: In Common Base Amplifier, the input is applied between the emitter and the base terminal, while the output is measured between the collector and base terminal. So, the base terminal is common between the input and output side, and hence this amplifier configuration is known as the Common Base (CB)Amplifier. The Common Base Amplifier provides a high voltage gain, low input impedance, and high output impedance. During the discussion of the CB amplifier, the expressions of the voltage gain, the input, and the output impedance are derived in the video. Application of CB Amplifier: CB amplifiers are commonly used at the high frequencies for the impedance matching. (Because of its low input impedance) The link for the other useful videos related to Small Signal Analysis of BJT: 1) BJT Small Signal Analysis: Common Emitter Fixed Bias and Voltage Divider Bias https://www.youtube.com/watch?v=wbDUDRlmUuM 2) BJT Small-Signal Model: https://www.youtube.com/watch?v=i2t9GTAd2I0 3) BJT Large Signal Model: https://www.youtube.com/watch?v=ME41uPsDxFo 4) BJT- Emitter Follower (Common Collector Amplifier) https://www.youtube.com/watch?v=qSxgU9jtFhw This video will be helpful to all the students of science and engineering in understanding the common base amplifier. #CommonBaseAmplifier #CBAmplifier -------------------------------------------------------------------------------------------------- Follow me on Youtube: null Follow me on Facebook: https://www.facebook.com/ALLABOUTELECRONICS/ Follow me on Instagram: https://www.instagram.com/all_about.electronics/ -------------------------------------------------------------------------------------------------- Music Credit: http://www.bensound.com/