FREE CIRCUIT DIAGRAMS 4U: Simple Audio power meter

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Sunday, May 09, 2010

Simple Audio power meter

This is simple audio power meter.When you use high power speakers this circuit is so important Because you can keep your speakers without burning.Here When the speaker out puts 1W green color LED will light up,for 1.5W you will be able to see orange color,When speaker out puts more than 3W you will be able to see red color.

Note

# The power levels mentioned are valid for 4-Ohm speakers. For 8-Ohm speakers you have to divide all the resistor values by two

# this circuit cant drive more than 40W continuously.

# If you want more LEDs you can attach LEDs as the same way