This circuit presents a very simple and useful stereo balance indicator circuit that is based on few common external components. This schematic circuit is very simple to build. An visual indication with LEDs for left , right and center balance is provided by this circuit.
Outputs from each channel are fed to the two inputs of IC1 connected as a differential amplifier. Output of the IC1 is connected to the noninverting inputs of the IC2 and IC3. The outputs of the IC2 and IC3 will go high illuminating the LED 3 , this will show that the right channel is dominating if he outputs of the IC1 approaches the supply rail. The IC2 and IC3 will go low and the LED1 will light if the sound is balanced to the left channel. The outputs of the IC2 and IC3 would be low and high respectively , lighting up LED2 if both channels are equal in amplitude. This sound balance audio circuit diagram need to be powered by a 15 volts power supply. The operational amplifier circuit diagram it is a TL084 operational amplifier.
Possibly Related Articles:
- True Stereo Indicator Detects L-R Signal Difference
This true stereo indicator is different from what we usually find on FM radio receiver, which is usually a pilot tone detector. A stereo broadcast from FM radio station contain... - Stereo VU Booster Circuit using Transistors
This is a Stereo VU Booster circuit. In this circuit, shown in the schematic diagram, transistor FCS9014 is used. Actually you can use almost any type of small signal NPN... - LED Audio Level (VU) Indicator and Alarm: The Dot Turns to Bar When The Signal Reach The Maximum Level!
This LED (Light Emitiing Diode) display consist of 10 LEDs to indicate the level of an input signal. If the signal is small, only LED#1 will light, and if the... - Digital Control for Tone, Volume, and Balance
Try to imagine the possibilities to integrate full audio tone, balance, and volume control into your multimedia computer product, and you integrate it without having to resort to any manual... - Power Amplifier’s Overload/Clipping Indicator
Clipping is a condition where a signal is truncated by insufficient processing. The cause of clipping can be different for various case, but most of them, especially in power amplifier...
| 
