LED VU Meter using LM3914 and LM358
Audio VU Meter
operational amplifier - Op amp LM324 as pre-amp to LM3915 LED VU Meter - Electrical Engineering Stack Exchange
How to make audio level, VU meter using LM3914 ic - YouTube
LM3915 + LM324 Audio VU Meter | Ashley Hughes Arduino
Audio Spectrum Analyzer (VU Meter) : 6 Steps - Instructables
Vu Meter Circuit 40 Led – Electronics Projects Circuits
Simple VU Meter Circuit using LM358
audio vu meter mono circuit under Repository-circuits -33619- : Next.gr
Led music 4 level with IC LM 324. Led VU meter with IC LM324 - YouTube
OpAmp Voltmeter
1.5V battery tester circuit using LM324 - ElecCircuit.com
http://www.zpag.net/Electroniques/AOP/Vumeter_02.html | Audio amplifier, Electronic circuit design, Electronic schematics
LED VU meter not sensitive enough at low volumes | Electronics Forum (Circuits, Projects and Microcontrollers)
FK103 - futurekit
How to make Audio Level VU Meter using LM324 ic - YouTube
50 LED VU meter - Help
40 LED vu meter
How to make Audio Level VU Meter using LM324 ic - YouTube
VU Meter With Double LM324 IC - YouTube
4 LED VU meter LM324 under Repository-circuits -25273- : Next.gr
