TRANSISTORS
Add t hree t ransistors ( 2 N3904 ) . Just be aware of the right o rientation a gain!
ELECTROLYTIC CAPACITORS
Let's do the e lectrolytic c aps ( 4x 1 0μF ) . These ones a re polarized! T here is a plus (+) sign on the
PCB that has to match the longer lead of the electrolytic capacitor (actually the minus (–) side is also
marked on the body of the capacitor with a white strip).
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