Schematics > Audio > 5 band graphic equalizer using a single IC/chip
5 band graphic equalizer using a single IC/chip
This circuit uses a single chip, IC BA3812L for realizing a 5 band graphic
equalizer for use in hi-fi audio systems.The BA3812L is a five-point graphic
equalizer that has all the required functions integrated onto one IC. The IC is
comprised of the five tone control circuits and input and output buffer
amplifiers. The BA3812L features low distortion, low noise, and wide dynamic
range, and is an ideal choice for Hi-Fi stereo applica-tions. It also has a wide
operating voltage range (3.5V to 16V), which means that it can be adapted for
use with most types of stereo equipment.
The five center frequencies are independently set using external capacitors,
and as the output stage buffer amplifier and tone control section are
independent circuits, fine control over a part of the frequency bandwidth is
possible, By using two BA3812Ls, it is possible to construct a 10-point graphic
equalizer. The amount of boost and cut can be set by external components.
The recommended power supply is 8V, but the circuit should work for a supply
of 9V also. The maximum voltage limit is 16V.
The circuit given in the diagram operates around the five frequency bands:
Title: 5 band graphic equalizer using a single IC/chip
Source: www.electronic-circuits-diagrams.com
Published on: 2005-02-01
Reads: 2189
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