This is the circuit diagram of a sound level indicator. Its give more beauty for your amplifier or other audio system. Many sound level indicator
circuits designed by using costly and complicated IC & transistors. This is very easy to build, because this circuit using a one LB1403N IC.
If you have stereo system, you can use two sound level indicator circuits for both channels. Use input signals should be given from pre amplifier.
You can use different color LEDs or LED bar graph display for indicator. Wide range supply voltage is very helpful you to use this circuit with
many accessories.
Components
- LB1403N, KA2284, AN6654
- 10KO
- 10KO V/R
- 10µf/16V
- 5 LEDs or LED bargraph display
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