Audio Spectrum Analyzer (VU Meter) : 6 Steps - Instructables
VU METER MONO BY TRANSISTOR (EKG-001A) - asadorn
Vumètre 02 / Vu meter 02 LM324
operational amplifier - Op amp LM324 as pre-amp to LM3915 LED VU Meter - Electrical Engineering Stack Exchange
I made this led volume meter circuit, and only the first led turns on, and it's very dim. I didn't have 1n4148 diodes, so I used 1n4007 diodes instead (they have similar
10 LED VU Meter Project by LM3915 and LM324 - EEWeb
Vu Meter Circuit 40 Led – Electronics Projects Circuits
4 LED VU meter LM324 under Repository-circuits -25273- : Next.gr
Vu Meter Circuit 40 Led – Electronics Projects Circuits
Vu Meter Circuit 40 Led – Electronics Projects Circuits
LED VU METER : 6 Steps (with Pictures) - Instructables
vu meter under Repository-circuits -33220- : Next.gr
LED VU meter not sensitive enough at low volumes | Electronics Forum (Circuits, Projects and Microcontrollers)
OpAmp Voltmeter
B-Tech Electronic Systems - Prototyped a 12 LED VU Meter for a project, Uses just 3x LM324 Quad Op-amp ICs a few resistors and a decoupling capacitor, it works surprisingly well for
Elements of PCB Design
Vu Meter - EasyEDA open source hardware lab
120 LED VU METER - W39908ASM2_SGBoard-B-LED-2 - Share Project - PCBWay
VU METER MONO BY LM324 (CASCADE) (EKG-005A) - asadorn
Simple VU Meter Circuit using LM358
operational amplifier - Op amp LM324 as pre-amp to LM3915 LED VU Meter - Electrical Engineering Stack Exchange
LED VU Meter using LM3914 and LM358
LM324 Based LED VU-Meter - EEWeb
How to make Audio Level VU Meter using LM324 ic - YouTube
LED Audio Level Meter Circuit - Electronic Circuit
