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Top 4 Electronics Project Using BC547 Transistor & (Bt136 Triac, Led, RGB) Simple Project – FJM ECOM
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resistors - Forward biasing of a BC547 transistor doesn't turn on LED - Electrical Engineering Stack Exchange
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Amazing Idea With BC547 Transistor, Diode And LED | 12v Battery Full Indicator - YouTube | Led diodes, Transistors, Diode
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