= Amplifier
{wiki}
= Amplification
{synonym}
Main implementations: the same as <electronic switches>: <vacuum tubes> in the past, and <transistors> in the second half of the 20th century.
\Video[https://www.youtube.com/watch?v=4ObzEft2R_g]
{title=How to make an LM386 audio amplifier circuit by #Afrotechmods (2017)}
{description=Builds the circuit on a <breadboard> from minimal components, including one discrete <transistor>. Then plays music from phone through headset cables into a <speaker>.}
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