Here are very simple project of Sound VU Meter Circuit Diagram. This circuit is a sound level meter, very simple, but very effective for your sound system or test bench. This type of circuit is also called a VU meter. 'Abbreviation means "unit volume" is used to express that the average value of a music signal over a short period of time.
Sound VU Meter Circuit Diagram
The VU meter described here is what is called a type "passive". This means that does not require a separate power source, since the power is supplied by an input signal. This makes it easier to use:. Just connect it to the speaker terminals (polarity does not matter) and is ready to use.
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