, pub-7261273910769421, DIRECT, f08c47fec0942fa0 google-site-verification: google19ed5dfe20a9a982.html Low cost LED VU meter circuit

Low cost LED VU meter circuit

Low Cost LED VU (Volume Unit) Meter Circuit

This circuit is built around KA 2281 16 pin IC.

Also this circuit works with 12 volt DC.

It looks like 5 led for the left and 5 led for the right channel.

The play starts from green led to yellow and for the peak sound it's red led.

You can built this on a common pcb or just by connecting the leads itself.

The circuit is given below and also some images of a demo board that I made to work here.

(Click here for high resolution image)

LED Vu Meter Circuit

Learn by doing simple circuits here

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