15 20 Led Vu Meter Schematic. The led meter is simpler and smaller than its analogue counterpart, and is very common in audio equipment. During playback or listening to radio, raise the volume off the amplifier at its maximum level, and adjust r4 and r11 until you get a full scale graph (all leds on) at each channel.
Vu meter or a volume unit meter circuit is a device used for indicating the music volume output from an amplifier or a loudspeaker system. An analog vu meter with peak led. I show you circuit diagram or schematic diagram 20 levels bar graph led vu meter without using any ic or without integrated.
Description lm3916 is a dedicated ic for vu led meter.
15 20 Led Vu Meter Schematic. In my previous video, i used lm3914 as vu meter but when select dot mode, almost every led growing and that not cool, so i added a sinewave rectifier to the lm3914 and everything works like a charm. The circuit round the ic1 makes input adaptation and amplification with the trimmer tr1 gain. Schematic is in kobaya subscribe is free! The circuit diagram shows a very simple configuration employing two of the above ics in the cascaded form for producing a good 20 led sequencing bar type indication.