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

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

About: Hello, my name is Carlos. I have a YouTube channel where I share my projects in https://www.youtube.com/c/carlosvolt

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: ‚ÄčKA2284 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.

Step 7: Block Diagram

Step 8: Electric Diagram

Step 9: Download Gerber File

Step 10: Material's List

  • Printed circuit
  • A KA2284 integrated circuit
  • A 1 uF electrolytic capacitor
  • A 3.3 uF electrolytic capacitor
  • A 47 uF electrolytic capacitor
  • A 220 ohm resistor
  • A 10 Kohm resistor
  • An 82 Kohm resistor
  • A 10 Kohm print potentiometer
  • 1nF capacitor
  • Four pin male

Step 11:

Be the First to Share

    Recommendations

    • Tinkercad Student Design Contest

      Tinkercad Student Design Contest
    • Retro Tech Challenge

      Retro Tech Challenge
    • Lamps and Lighting Contest

      Lamps and Lighting Contest

    Comments