Vu-meter a 20 led con lm3914 / lm3915 con operazionale Ic instructables Vu meter using 3915 ic : 14 steps
VU Meter Using 3915 IC : 14 Steps - Instructables
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Blinking led
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LM3915 IC Datasheet, Pinout, Application Circuits - Homemade Circuit
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89C2051/4051 Programmer
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led - LM3915 VU meter not working properly - Electrical Engineering
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LED Sound level display circuit by using IC LM3915 | CircuitsTune
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Blinking led - LED-uri si alte surse de lumina - ELFORUM - Forumul
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555 timer circuit Page 7 : Other Circuits :: Next.gr
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Push-Button Variable Power Supply Circuit - LM317 Application
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VU Meter Using 3915 IC : 14 Steps - Instructables
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VU Meter Using 3915 IC - jpralves.net