This project is a sound level meter circuit that easy and very cheap, can drive 9 LED display,The LB1409 is used as base of this circuit makes small size.
This LM3914 vu meter circuits, the VU meter kit, with the assembly various parts on their own or the style ready to use. Most of us are using the IC-LM3914 [...]
Let's use two simple Analog VU meter schematics. If we take the amplifier connected to the speakers. It is very dangerous.If your amplifier has a higher power than the limits…