Recommended · for beginners
Adventures in a one transistor audio amplifier
Why people recommend it
Offered as a simple starter project and an example of driving a speaker from one transistor with the help of a transformer.
Watch for: An experimental build; one engineer preferred a more rigorous design approach
In their words
After watching those two videos, Single transistor, 1W and Adventures in a one transistor audio amplifier, I had to illustrate a slightly more sane design approach.
jonk on electronics.stackexchange.com, Apr 2018. CC BY-SA.
Also, you could follow Jonk's suggestion and get hold of a transformer, like here:
Sredni Vashtar on electronics.stackexchange.com, Apr 2018. CC BY-SA.
