#413: Cascading Common-Emitter Amplifiers using an Emitter Follower @w2aew

Uploaded July 2026 | Updated September 2026, 2 weeks ago

This is a follow-up from the previous video (#412) that discussed the input and output impedances of a Common Emitter Amplifier. In this video, we take a look at how these impedances interact when the amplifiers are cascaded together, and how the negative effects can be mitigated through the use of an Emitter Follower, or Common Collector Amplifier used as a buffer between the stages. Links to the previous video, and the video tutorial on the Emitter Follower are found below - as well as a link to this video's notes.
Common Emitter Amp Input/Output Impedances:
youtu.be/yhuf2_Zu8T8
Emitter Follower Amplifier tutorial:
youtu.be/8f-nhjQ1jMk
Video Notes:
qsl.net/w2aew/youtube/Cascade-Common-Emitter-Amplifiers.pdf

#413: Cascading Common-Emitter Amplifiers using an Emitter Follower

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