Hello guys,
I have built a Summing amplifier using lm358P such that the output follows the sum of input signals (atleast that is what i wanted it to do..!) , i've built it to connect 6 guitars and 1 audio input (mostly from the head phone jack of PC). This Amplifier is followed by a pre amp with controllable gain whose output is fed to a speaker.
I can only use a single power supply of 12v, hence i've offset-ed the summed signal by vcc/2.
The problem i am facing is that the summing amplifier stage is not linear, meaning , the output does not follow the input within the voltage swing range and it is getting distorted and i'm unable to understand why. Plz help!
I have built a Summing amplifier using lm358P such that the output follows the sum of input signals (atleast that is what i wanted it to do..!) , i've built it to connect 6 guitars and 1 audio input (mostly from the head phone jack of PC). This Amplifier is followed by a pre amp with controllable gain whose output is fed to a speaker.
I can only use a single power supply of 12v, hence i've offset-ed the summed signal by vcc/2.
The problem i am facing is that the summing amplifier stage is not linear, meaning , the output does not follow the input within the voltage swing range and it is getting distorted and i'm unable to understand why. Plz help!
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