NPN 2n3904 and PNP 2n3906 transistor controlled flashing LED circuit step by step build HD

27.03.2018
https://youtu.be/DQgf7t6EWJ0 Lecture on NPN 2n3904 and PNP 2n3906 transistor controlled electronics flashing LED schematic http://electronzap.com/extra-elect...

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