ECE Projects
 
 

 

 

Electronic Projects

       AudioRF Circuits 
     
      Event Detection Circuits 
         
      Math Function Circuits 
         
      Measurement Circuits 
    
      Motor Control Circuits 
         
      Power Supply Circuits 
         
      Sensing Circuits 
         
      Special Function Circuits 
         
      Switching Circuits 
     
      Timing Circuits 
         
      ToneWave Generators 

Audio Mixer Circuit

Figure 1.  Audio Mixer Circuit Diagram

   This is a circuit for a simple audio mixer.  The main component of this circuit is the 741, a general-purpose operational amplifier. It is configured as a 'summer', or a circuit whose output is the sum of its inputs. This audio mixer may be used for three microphones. The output of this mixer may be amplified with this audio amplifier.