Build a VU Meter With Integrated Circuit KA2284 (Includes Printed Circuit) : 11 Steps

Video Tutorial

Step 1:

In this tutorial we will see how to build a level meter with rhythmic audio lights, very easy, it includes the printed circuit. This project is based on the KA2284 integrated circuit.

Step 2: KA2284 Integrated Circuit Features

High gain rectifier amplifier included (Gv = 26dB)
Low radiation noise when LED lights up
Logarithmic indicator for 5-point bar-type LED.
Constant current output (15mA)
Wide operating supply voltage range is between (3.5V ~ 16V)
No diode or transistor required for ALC or automatic volume control
Minimum number of external parts required

Step 3:

The KA2284 is a monolithic integrated circuit.This integrated circuit is very simple and does not have adjustment pins, in a normal way they cannot be connected in series and it is designed to measure audio, and therefore it is logarithmic.

Step 4:

Step 5:

The KA2284 is a monolithic integrated circuit.This integrated circuit is very simple and does not have adjustment pins, in a normal way they cannot be connected in series and it is designed to measure audio, and therefore it is logarithmic.

Step 6:

The ka2284 is an integrated circuit whose application is for the development of a logarithmic level meter, which has 5-level measurement, the package is of the 9-SIP package type.One of the main advantages is that it has a high-gain input, so we don't need a preamplifier to make it work, reducing construction costs.