http://www.zpag.net/Electroniques/AOP/Vumeter_02.html | Audio amplifier, Electronic circuit design, Electronic schematics
8 LED VU meter circuit using LM324 IC - Electronics Area
FK103 - futurekit
Simple 20 LED Vu Meter Using LM3915 : 6 Steps - Instructables
operational amplifier - Op amp LM324 as pre-amp to LM3915 LED VU Meter - Electrical Engineering Stack Exchange
Temperature gauge circuit using LM324 IC (PCB) - Electronics Area
How to make Audio Level VU Meter using LM324 ic - YouTube
vu meter circuit Page 4 : Meter Counter Circuits :: Next.gr
Audio VU Meter
Vu Meter Circuit 40 Led – Electronics Projects Circuits
40 LED vu meter
4QD-TEC: Audio LED VU meter
Vu Meter Circuit 40 Led – Electronics Projects Circuits
Vu Meter Circuit 40 Led – Electronics Projects Circuits
LM3915 + LM324 Audio VU Meter | Ashley Hughes Arduino
Audio Spectrum Analyzer (VU Meter) : 6 Steps - Instructables
VU Meter With Double LM324 IC - YouTube
OpAmp Voltmeter
VU METER STEREO BY TRANSISTOR (EKG-002A) - asadorn
4 LED VU meter LM324 under Repository-circuits -25273- : Next.gr
1.5V battery tester circuit using LM324 - ElecCircuit.com
LM324 Based LED VU-Meter - EEWeb
How to make audio level, VU meter using LM3914 ic - YouTube
Simple VU Meter Circuit using LM358
LED VU meter not sensitive enough at low volumes | Electronics Forum (Circuits, Projects and Microcontrollers)
