Uploaded October 2022 | Updated September 2026, 1 week ago

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#174 In this video I continue the series on the Class D amplifier by designing such a circuit. I go for the most basic voltage switching amplifier, but as always I still need some sort of output matching since that is the only way to get the desired output power. In the end I simulate the circuit and hopefully the real thing will behave in a similar fashion.

Related videos:
Class A amplifier part 1 - youtu.be/GtFnkXar5JU
Class A amplifier part 2 - youtu.be/wdd18pYyFg0
Class B amplifier part 1 - youtu.be/eu54pe0LhpM
Class B amplifier part 2a - youtu.be/oTVJM5BZttw
Class B amplifier part 2b - youtu.be/qLYQAOWTHRE
Class C amplifier part 1 - youtu.be/xPTJmFtaGNc
Class C amplifier part 2 - youtu.be/gYbMpu4NoZo
Class D audio amplifier part 1 - youtu.be/w1Rq1cxfNEk
Class D audio amplifier part 2 - youtu.be/pLXautZaH8c
Class D audio amplifier part 3 - youtu.be/zhpOU6eb2gs
Class D RF amplifier part 1 - youtu.be/idisyToMZ58
Class D RF amplifier part 2 - youtu.be/wSFtRKrJ84M

Used datasheets:
onsemi.com/pdf/datasheet/74ac14-d.pdf
ti.com/lit/an/scaa035b/scaa035b.pdf
Further reading and matching calculator:
http://rfic.eecs.berkeley.edu/ee242/pdf/Module_6_2_PA_Classes.pdf
https://home.sandiego.edu/~ekim/e194rfs01/jwmatcher/matcher2.html

Special Thanks to all my supporters on Patreon! Especially Ralf B., Paul Pr. Richard, Jonathan Alvarado and Tosta!

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