DIY VU METER 11 LED USING BC547 TRANSISTORS
Vu meter project using bc547 transistors
You might see many types of vu meter but this one is completely different because it has three modes like ◀️ left sliding mode, ▶️ right sliding mode, and◀️▶️ center sliding mode. You don't need to use any IC to make it. 34npn transistors (bc 547) and 1pnp transistors (bc 557) are required to make it. It features 11 leds. You need to place these leds in a straight line. These led lights keep flashing right, left and downward as the audio signal increases. The operating voltage of this vu meter circuit is 12 volts dc.
CIRCUIT DIAGRAM :-
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