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LM3915 VU METER – MOHIT BHOITE
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Velleman K4304 Mono VU-Meter with 10 LEDs, Multi-Colour
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LED VU Meter using LM3914 and LM358
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How to make easy LED Audio VU Meter circuit by using all transistors at home - YouTube
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Audio VU/Sound Level Meter with LM339 - Electronics-Lab.com
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4QD-TEC: Audio LED VU meter
LED Audio Level VU Meter Using Transistors
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