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 of the speaker. It may make a very bad sound. More important is the speaker and amplifier may be damaged.These circuits may help you!
Simple Analog VU meter circuit
![Simple VU meter from multi meter](https://www.eleccircuit.com/wp-content/uploads/2009/05/simple-vu-meter-form-multi-meter-300x176.jpg)
An expensive stereo is general often have built in VU meter to show max power (not too much). But a typical radio receiver or small amplifier will not have the VU METER.
I will modify the multimeter, or a galvanometer in the measuring range 100uA. And another small number of electronic devices.
In circuit,diodes and capacitors acting rectifier and filter from AC to DC current.
The VR1-Potentiometer 10K for fine full scale of meter
Easy to use, you build this circuit into internal monitor speakers right away.
Parts you will need
M1: 100uA Galvanometer or VU Meter
D1: 1N4148, 75V 150mA Diodes
C1: 47µF 25V Electrolytic Capacitors
VR1: 10K, Linear Potentiometer
![](https://www.eleccircuit.com/wp-content/uploads/2021/11/Audio-Level-Header-Testing-Tool-VU-Meter-audio-equipment-tool.jpg)
Thanks: Photo Buy now
Peak Reading VU Meter by IC CA3130
![Peak Reading VU-meter by CA3130](https://www.eleccircuit.com/wp-content/uploads/2009/05/peak-reading-vu-meter-by-ca3130-600x318.jpg)
When you build Amplifier Circuit. You maybe need Peak Reading VU Meter circuits. I recommend this circuit, it uses IC CA3130 opamp, giving high sensitivity, indicating with a Current Meter (Standard VU-Meter unit). easy to build.
![](https://www.eleccircuit.com/wp-content/uploads/2021/11/CA3130EZ-IC-OP-AMP-15MHZ.jpg)
Thanks: Photo CA3130 Buy now
VR1 is used for fine adjustment of input signals. Also perfect unit for a audio signal mixer to adjust recording level.
Parts you will need
IC1: CA3130, Op Amp, BiMOS, MOSFET Inputs, CMOS Outputs, 15MHz
M1: 100uA or 130uA Galvanometer or VU Meter
D1: 1N4148, 75V 150mA Diodes
C1: 0.1uF 50V, Ceramic Capacitors or Polyester Capacitor
C2: 39pF 50V, Ceramic Capacitors
C3: 47µF 25V Electrolytic Capacitors
C4: 100µF 25V Electrolytic Capacitors
R1: 68K 1/4W Resistors tolerance: 5%
R2: 560K 1/4W Resistors tolerance: 5%
R3: 220K 1/4W Resistors tolerance: 5%
VR1: 220K___Linear Potentiometer
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I love electronics. I have been learning about them through creating simple electronic circuits or small projects. And now I am also having my children do the same. Nevertheless, I hope you found the experiences we shared on this site useful and fulfilling.
Shall I Use multi-meter or any other meter instead of VU meter???
this is a good project to build with is a little complicated to build.
Hi,
I would like to buy complete set for the 2 Vumeters (Parts and PCI boards). Please give to me the total price with shipping fee to:
Tran dai Phuc
21 rue de Lesigny
94440 Santeny. France
My email : [email protected]
Hello PhucTran Dai,
Thanks for visiting. I am sorry cannot sell these components to you.
But you purchase a product by affiliate Amazon links. https://amzn.to/3fApgaM
I receive a small commission – at no extra cost to you.
Very interesting , useful and important circuit for beginner.Many many thanks for your subject.
Hello Md Golam Rasul,
Thanks for your feedback. You are power for me.
Thanks