Uploaded April 2026 | Updated September 2026, 1 week ago

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#275 In this video I look at a rather uncommon but still important implementation of a transistor circuit - the lossless amplifier. While not as widely known as the other topologies, it does however present some unique characteristics which make it quite interesting for special applications.

Related videos:
Common Base Amplifier (1/2): youtu.be/DJw3jI5dLrQ
Common Base Amplifier (2/2): youtu.be/Q_r2UyYu-r0
Common Collector amplifier (1/2): youtu.be/YsmOYaqFkuc
Common Collector amplifier (2/2): youtu.be/EO3NavaTmXE
Common Emitter amplifier (1/2): youtu.be/D-76AL5fijE
Common Emitter amplifier (2/2): youtu.be/3FioyZGrwCY
Lossless Amplifier: youtu.be/vCHTpsCq8C0


Links and further reading:
patentimages.storage.googleapis.com/87/4b/53/97f5eca6bf9a55/US3891934.pdf
web.archive.org/web/20200215081927/http://home.earthlink.net/~christrask/Lossless%20Feedback%20Amplifiers.pdf
https://leo.phys.unm.edu/~lwa/memos/memo/lwa0071.pdf

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