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LED Vu meter circuit (LM3914) ~ Amateur-built.

LED Vu meter circuit (LM3914) ~ Amateur-built.

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10 LED level display circuit diagram - Basic_Circuit - Circuit Diagram

10 LED level display circuit diagram - Basic_Circuit - Circuit Diagram

LED Vu meter circuit (LM3914) ~ Amateur-built.

LED Vu meter circuit (LM3914) ~ Amateur-built.

Five-Decade Dynamic Light-Level Meter – Simple Circuit Diagram

Five-Decade Dynamic Light-Level Meter – Simple Circuit Diagram

meter counter circuit :: Next.gr

meter counter circuit :: Next.gr

Very Simple Light Meter | Simple Circuit Diagram

Very Simple Light Meter | Simple Circuit Diagram

YO3HJV: LED Voltmeter (for portable QRP ops)

YO3HJV: LED Voltmeter (for portable QRP ops)

Audio kit: 2012

Audio kit: 2012