Audio Mixer - University of California, San...
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MAE 140: Linear Circuits – Winter 2013 Circuit Demonstration #3 Audio Mixer
Transcript of Audio Mixer - University of California, San...
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MAE 140: Linear Circuits – Winter 2013 Circuit Demonstration #3
Audio Mixer
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What is an audio mixer?
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1
ALM324N
2
BLM324N
3
CLM324N
100K
R1
100KR2
100KR3
100K
R4
100K
R5
22KR7
100KR6
GNDGND
GND
100KR9
100KR10
GND
22KR8
GND
Vin1
Vin2
VoutV1
V2
2-channel audio mixer using LM324
R9V1= 1+ Vin1R7
⎛ ⎞⎜ ⎟⎝ ⎠
R10V2= 1+ Vin2R8
⎛ ⎞⎜ ⎟⎝ ⎠
Vout=V1+V2
R9 R10Vout 1+ Vin1+ 1+ Vin2R7 R8
⎛ ⎞ ⎛ ⎞= ⎜ ⎟ ⎜ ⎟⎝ ⎠ ⎝ ⎠
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Circuit close-up
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Experiment Setup
