4-channel audio mixer using LM3900 IC October 4, 2018 4-channel audio mixer using LM3900 IC Posted by Marcel at 8:14 pm No Responses Operational Amplifier Circuits Tagged with: audio 4-channel audio mixer using LM3900 IC 4 operational amplifiers, some resistors and capacitors to implement an audio mixer with a very simple design. 128Shares128
